A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to _____? A. Fall away from the train B. Remain unaffected C. Fall towards the train D. Fall away from or towards the train depending upon the speed

A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to _____? A. Fall away from the train B. Remain unaffected C. Fall towards the train D. Fall away from or towards the train depending upon the speed
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ANSWER: C
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A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to -----? A. Remain unaffected B. Fall away from the train C. Fall towards the train (Answer) D. Fall away from or towards the train depending upon the speed

Description : A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to -----? A. Remain unaffected B. Fall away from the train C. Fall towards the train (Answer) D. Fall away from or towards the train depending upon the speed

Last Answer : C. Fall towards the train (Answer)

A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of (1) gravitational force between train and man. (2) illusion of the man (3) the centripetal force (4) pressure difference due to fast moving air in between

Description : A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of (1) gravitational force between train and man. (2) illusion of the man (3) the centripetal force (4) pressure difference due to fast moving air in between

Last Answer : (4) pressure difference due to fast moving air in between Explanation: When a fast-moving train passes a man standing on the platform at rest, the air between train and person also moves with ... higher pressure, and being behind the man standing close will tend to push him toward the train.

A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of __________ . (1) gravitational force between train and man (2) illusion of the man (3) the centripetal force (4) pressure difference due to fast moving air in between

Description : A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of __________ . (1) gravitational force between train and man (2) illusion of the man (3) the centripetal force (4) pressure difference due to fast moving air in between

Last Answer : pressure difference due to fast moving air in between

A man is standing ner the edge of a uniformly rotating platform about an axis passing through its centre. The speed of rotation of the platorm will decrease if he a.extends his arms outwards b.107 dynes c.moves towards the axis of rotation d.jumps out from that platform e.take out his coat and throws away

Description : A man is standing ner the edge of a uniformly rotating platform about an axis passing through its centre. The speed of rotation of the platorm will decrease if he a.extends his arms outwards b.107 ... towards the axis of rotation d.jumps out from that platform e.take out his coat and throws away

Last Answer : a. extends his arms outwards

A man is standing near the edge of a uniformly rotating platform about an axis passing through its centre. The speed of rotation of the platform will decrease if he a.extends his arms outwards b.moves towards the axis of rotation c.jumps out from the platform d.accepts a heavy bag from one of his friends standing near by and holds it in his hand e.107 dynes

Description : A man is standing near the edge of a uniformly rotating platform about an axis passing through its centre. The speed of rotation of the platform will decrease if he a.extends his arms outwards b.moves ... heavy bag from one of his friends standing near by and holds it in his hand e.107 dynes

Last Answer : d. accepts a heavy bag from one of his friends standing near by and holds it in his hand

The condensing pressure due to the presence of non-condensable gases, as compared to that actually required forcondensing temperatures without non-condensable gases, (a) will be higher (b) will be lower (c) will remain unaffected (d) may be higher or lower depending upon the nature of non-condensable gases

Description : The condensing pressure due to the presence of non-condensable gases, as compared to that actually required forcondensing temperatures without non-condensable gases, (a) will be higher (b) will be ... remain unaffected (d) may be higher or lower depending upon the nature of non-condensable gases

Last Answer : Ans: a

A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is – (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Description : A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is – (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Last Answer : (3) of higher pitch when train arrives Explanation: Sound is a sequence of waves of pressure that propagates through compressible media such as air or water. (Sound can propagate through solids as well, but there are additional modes of propagation).

A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is – (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Description : A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is – (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Last Answer : (3) of higher pitch when train arrives Explanation: Sound is a sequence of waves of pressure that propagates through compressible media such as air or water. (Sound can propagate through solids as well, but there are additional modes of propagation).

A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is - (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Description : A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is - (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Last Answer : (3) of higher pitch when train arrives

A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Description : A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Last Answer :  of higher pitch when train arrives

The window of the mail van of a section should be kept closed a) Throughout the beat of the section b) When the train is in motion c) When the train is drawn up at railway station platform till the train starts d) None of these

Description : The window of the mail van of a section should be kept closed a) Throughout the beat of the section b) When the train is in motion c) When the train is drawn up at railway station platform till the train starts d) None of these

Last Answer : c) When the train is drawn up at railway station platform till the train starts

The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperatureconstant, will (a) increase (b) decrease (c) may increase or decrease depending on the type of refrigerant used (d) remain unaffected

Description : The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperatureconstant, will (a) increase (b) decrease (c) may increase or decrease depending on the type of refrigerant used (d) remain unaffected

Last Answer : Ans: a

The C.O.P of a refrigeration cycle with increase in evaporator temperature, keeping condenser temperature constant, will (a) increase (b) decrease (c) remain unaffected (d) may increase or decrease depending on the type of refrigerant used

Description : The C.O.P of a refrigeration cycle with increase in evaporator temperature, keeping condenser temperature constant, will (a) increase (b) decrease (c) remain unaffected (d) may increase or decrease depending on the type of refrigerant used

Last Answer : Ans: a

The rise or depression of liquid in a tube due to surface tension will increase in size of tube will (A) Increase (B) Remain unaffected (C) May increase or decrease depending on the characteristics of liquid (D) Decrease

Description : The rise or depression of liquid in a tube due to surface tension will increase in size of tube will (A) Increase (B) Remain unaffected (C) May increase or decrease depending on the characteristics of liquid (D) Decrease

Last Answer : Answer: Option D

The door of a running refrigerator inside a room was left open. Which of the following statements is correct?  (a) The room will be cooled to the temperature inside the refrigerator.  (b) The room will be cooled very slightly.  (c) The room will be gradually warmed up.  (d) The temperature of the air in room will remain unaffected.  (e) any one of above is possible depending on the capacity.

Description : The door of a running refrigerator inside a room was left open. Which of the following statements is correct?  (a) The room will be cooled to the temperature inside the refrigerator.  (b) The room ... air in room will remain unaffected.  (e) any one of above is possible depending on the capacity.

Last Answer : Answer : c

A train crosses a platform and a scooter standing on the platform in 20 seconds, 12seconds respectively.What is the length of the platform if the speed of the train is 25 km/hr? A) 55.8 m B) 75m C) 124m D) 68.5m

Description : A train crosses a platform and a scooter standing on the platform in 20 seconds, 12seconds respectively.What is the length of the platform if the speed of the train is 25 km/hr? A) 55.8 m B) 75m C) 124m D) 68.5m 

Last Answer : Answer: A Explanation: Given that, The speed of the train = 25km/hr = 25x 5/18 m/sec = 125/18 m/sec The train crosses a scooter in 12 seconds. Then, Length of the train = 125/18*12= 83.33 Now, ... 18(X +83.3)= 2500 18X=1000.6 X=55.58 m Hence the platform is 55.58 m long.

Nishu is standing on a railway bridge which is 180 m long. He finds that a train crosses the bridge in 20 seconds but himself in 8 seconds. Find the speed of the train? A.35 kmph B.54 kmph C.62 kmph D.70 kmph E.None of these

Description : Nishu is standing on a railway bridge which is 180 m long. He finds that a train crosses the bridge in 20 seconds but himself in 8 seconds. Find the speed of the train? A.35 kmph B.54 kmph C.62 kmph D.70 kmph E.None of these

Last Answer : Answer - B (54 kmph) Explanation - Let the length of the train be x metres. Then, the train covers x metres in 8 seconds (train is actually covering itself because length of man is very less compartable to train)and (x + ... /8]m/sec (convert to km/hr i.e x 18/5) =[120/8] x 18/5kmph = 54 kmph.

It takes 60 sec for a train running at 162 km/hr to cross a bridge. And it takes 36 sec for the same speed to cross a boy walking at the rate of 18km/hr in the same direction in which the train is running. What is the length of the train and length of the platform. A) 1440 &1260m B) 1220 &60m C) 1000 & 1460m D) 1260 &1450m

Description : It takes 60 sec for a train running at 162 km/hr to cross a bridge. And it takes 36 sec for the same speed to cross a boy walking at the rate of 18km/hr in the same direction in which the train is ... the train and length of the platform. A) 1440 &1260m B) 1220 &60m C) 1000 & 1460m D) 1260 &1450m

Last Answer : ANSWER: A  Explanation:  Relative speed of the train to man = (162 - 18)  = 144km/hr  Convert km/hr into m/s  144km/hr = (144 * 5 /18) m/s  = 40 m/s  When the train passes ... of bridge = 2700  length of bridge = 1260 m  the length of the bridge & train are 1260 and 1440m

If the spring mass system with m and spring stiffness k is taken to very high altitude, the natural frequency of longitudinal vibrations * 1 point (A) increases (B) decreases (C) remain unchanged (D) may increase or decrease depending upon the value of the mass

Description : If the spring mass system with m and spring stiffness k is taken to very high altitude, the natural frequency of longitudinal vibrations * 1 point (A) increases (B) decreases (C) remain unchanged (D) may increase or decrease depending upon the value of the mass

Last Answer : (C) remain unchanged

If the spring mass system with m and spring stiffness k is taken to very high altitude , the natural frequency of longitudinal vibrations A) Increases B) Decreases C) Remain unchanged D) May be increase or decrease depending upon the value of the mass

Description : If the spring mass system with m and spring stiffness k is taken to very high altitude , the natural frequency of longitudinal vibrations A) Increases B) Decreases C) Remain unchanged D) May be increase or decrease depending upon the value of the mass

Last Answer : C) Remain unchanged

According to the effective demand principle: a) at a certain price, the output shall not be determined by any known factor b) at a certain price, the output will remain unaffected by rise or fall in demand c) at a certain price, equilibrium output will be solely determined by the aggregate demand d) none of the above

Description : According to the effective demand principle: a) at a certain price, the output shall not be determined by any known factor b) at a certain price, the output will remain unaffected by rise or ... certain price, equilibrium output will be solely determined by the aggregate demand d) none of the above

Last Answer : c) at a certain price, equilibrium output will be solely determined by the aggregate demand

If K is a constant depending upon the ratio of the width of the slab to its effective span l, x is the distance of the concentrated load from the nearer support, bw is the width of the area of contact of the concentrated load measured parallel to the supported edge, the effective width of the slab be is (A) K/x (1 + x/d) + bw (B) Kx (1 - x/l) + bw (C) Kx (1 + x/l) + bw (D) All the above

Description : If K is a constant depending upon the ratio of the width of the slab to its effective span l, x is the distance of the concentrated load from the nearer support, bw is the width of the area of contact of the concentrated load measured ... ) Kx (1 - x/l) + bw (C) Kx (1 + x/l) + bw (D) All the above

Last Answer : Answer: Option B

What is the nature of interference pattern at the contact edge of wedge shaped film (a) Always bright (b) Always dark (c) Bright or dark depending upon the thickness of other end (d) Bright or dark depending upon the wavelength of the light

Description : What is the nature of interference pattern at the contact edge of wedge shaped film (a) Always bright (b) Always dark (c) Bright or dark depending upon the thickness of other end (d) Bright or dark depending upon the wavelength of the light

Last Answer : (b) Always dark

A man in a train moving with a constant velocity drops a ball on the platform. The path of the ban as seen by an observer standing on the platform is – (1) A straight line (2) A circle (3) A parabola (4) None of these

Description : A man in a train moving with a constant velocity drops a ball on the platform. The path of the ban as seen by an observer standing on the platform is – (1) A straight line (2) A circle (3) A parabola (4) None of these

Last Answer : (3) A parabola Explanation: In the reference frame of the platform the ball has initial horizontal velocity equal to the velocity of the train. The vertical direction is the same observed on the train because both observers agree that gravity is acting on the ball causing an acceleration g.

A man in a train moving with a constant velocity drops a ball on the platform. The path of the ball as seen by an observer standing on the platform is (1) A straight line (2) A circle (3) A parabola (4) None of these

Description : A man in a train moving with a constant velocity drops a ball on the platform. The path of the ball as seen by an observer standing on the platform is (1) A straight line (2) A circle (3) A parabola (4) None of these

Last Answer : A parabola

A train travelling at 36 kmph completely crosses another train having half its length and travelling in the opposite direction at 54 kmph, in 12 seconds. If it also passes a railway platform in 112 minutes, the length of the platform is : a) 560 metres b) 620 metres c) 700 meres d) 750 metres e) 720 meters

Description : A train travelling at 36 kmph completely crosses another train having half its length and travelling in the opposite direction at 54 kmph, in 12 seconds. If it also passes a railway platform in 112 minutes, the length ... is : a) 560 metres b) 620 metres c) 700 meres d) 750 metres e) 720 meters

Last Answer : Answer: c)

A passenger train travelling at 96 kmph completely crosses another train having half its length and travelling in opposite direction at 84 kmph, in 24 seconds. It also passes a railway platform in 90 seconds. The length of the platform is A) 1250 m B) 2258m C) 1600 m D) 3725m

Description : A passenger train travelling at 96 kmph completely crosses another train having half its length and travelling in opposite direction at 84 kmph, in 24 seconds. It also passes a railway platform in 90 seconds. The length of the platform is A) 1250 m B) 2258m C) 1600 m D) 3725m

Last Answer :  ANSWER:C  Explanation:  Let the length of the first train be x metres  Then, is x /2metres  Relative speed = (96+84)kmph  = 180 kmph  Convert km/hr into m/s,  = 180*5/18  = 50 m/s  Therefore (x ...  (800+y) = 90*480/18  y = 2400- 800  = 1600  Hence, the length of the platform is 1600 m

Which is the longest platform in World? A. Howrah Station B. Kharagpur Railway Platform C. Gorakhpur Railway Platform D. None of these

Description : Which is the longest platform in World? A. Howrah Station B. Kharagpur Railway Platform C. Gorakhpur Railway Platform D. None of these

Last Answer : C [Gorakhpur Railway Platform] Explanation: Gorakhpur in India gets world's longest railway platform. A newly renovated platform at Gorakhpur Railway Station in Indian state of Uttar Pradesh has become the world's longest, measuring 1,366m

Which Railway station has longest platform in India? A. Gorakhpur Railway Station B. Howrah Railway Station C. Bhubaneswar Railway Station D. Kharagpur Railway Station

Description : Which Railway station has longest platform in India? A. Gorakhpur Railway Station B. Howrah Railway Station C. Bhubaneswar Railway Station D. Kharagpur Railway Station

Last Answer : A [Gorakhpur Railway Station] Explanation: A newly renovated platform at Gorakhpur Railway Station in Indian state of Uttar Pradesh has become the world's longest, measuring 1,366m. Until recently, Kharagpur in the Indian state of West Bengal was the longest platform at 1,072m.

What is the best way to train my 4 year old boy to pee standing up?

Description : What is the best way to train my 4 year old boy to pee standing up?

Last Answer : answer:Imitation is the sincerest form of flattery. Let him watch you. Can you find a safe spot outdoors where you two can pee together? At the first snow fall, teach him how to pee artistically in the snow ... splash issue. His equally tall sons {my steps} stood, as did my son. They were not neat.)

A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be - (1) a parabola (2) a horizontal straight line (3) a vertical straight line (4) a circle

Description : A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be - (1) a parabola (2) a horizontal straight line (3) a vertical straight line (4) a circle

Last Answer : (1) a parabola Explanation: Parabola, because when the coin is dropped at a particular point, it has the same velocity as the running train. So, by Newton's first law, it continues its motion horizontally with that velocity.

The prices in each segment a. drop by $0.50 each year. b. drop by $1.00 each year. c. increase by $0.50 each year. d. vary depending upon relative market demand. e. remain constant in each segment.

Description : The prices in each segment a. drop by $0.50 each year. b. drop by $1.00 each year. c. increase by $0.50 each year. d. vary depending upon relative market demand. e. remain constant in each segment.

Last Answer : a. drop by $0.50 each year.

Mark the correct option a) Changing station is a Railway station is where the beats of two transit sections join and where the mails brought by one of them are handed over to the other b) A connecting station is an RMS section working in a train in immediate connection with another train in which another RMS section works c) Regn of newspaper, renewal or canceling any registration will be issued by Head of the department d) All the above

Description : Mark the correct option a) Changing station is a Railway station is where the beats of two transit sections join and where the mails brought by one of them are handed over to the other b) ... , renewal or canceling any registration will be issued by Head of the department d) All the above

Last Answer : d) All the above

A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground. (1) 1 : 1 (2) 1 : 2 (3) 1 : 4 (4) Cannot be found from the given information.

Description : A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground ... : 1 (2) 1 : 2 (3) 1 : 4 (4) Cannot be found from the given information.

Last Answer : (1) 1 : 1 Explanation: The stone which is throws upward will have the same velocity of u at the point of its original position when it is falling down. Another stone is thrown downwards with u. So ... will hit the ground with same velocity. So the ratio between the speeds of two stones will be 1:1

A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground. (1) 1 : 1 (2) 1 : 2 (3) 1 : 4 (4) Cannot be found from the given information.

Description : A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground ... : 1 (2) 1 : 2 (3) 1 : 4 (4) Cannot be found from the given information.

Last Answer :  1 : 1

A and B are 2 trains running in opposite direction cross a man standing on the platform in 54sec and 34 sec respectively and they cross each other in 46sec. The ratio of their speed is. A) 1:3 B) 3:2 C) 2:3 D) 2:2

Description : A and B are 2 trains running in opposite direction cross a man standing on the platform in 54sec and 34 sec respectively and they cross each other in 46sec. The ratio of their speed is. A) 1:3 B) 3:2 C) 2:3 D) 2:2

Last Answer : ANSWER:B Explanation:  Let the speed of the 1st train be x' m/sec and  the speed of the 2nd train be y' m/sec  then the length of the 1st train = 54 x metres  length of the 2nd train = 34 y metres  54x + 34y / x+ y ...  54x - 46x = 46y - 34y  8x = 12y  x/y = 12 / 8 = 6/4 = 3/2  x:y = 3:2

When a ray passes through a prism ______. A. It goes undeviated B. It remain parallel to a base C. It bends towards the base D. None

Description : When a ray passes through a prism ______. A. It goes undeviated B. It remain parallel to a base C. It bends towards the base D. None

Last Answer : C. It bends towards the base

The rise of ___________ has led marketing to evolve away from a hierarchical one-sided mass communication model towards more participatory technologies (e.g. social channels and online communities). 1. Website 2. Social media 3. Web platform 4. Mobile App

Description : The rise of ___________ has led marketing to evolve away from a hierarchical one-sided mass communication model towards more participatory technologies (e.g. social channels and online communities). 1. Website 2. Social media 3. Web platform 4. Mobile App

Last Answer : Social media

Railway tracks are banked on curves so that : (1) the train may not fall down inwards. (2) the weight of the train may be reduced. (3) necessary centripetal force may be obtained from the horizontal component of the normal reaction due to track. (4) no frictional force may be produced between the wheels and the track.

Description : Railway tracks are banked on curves so that : (1) the train may not fall down inwards. (2) the weight of the train may be reduced. (3) necessary centripetal force may be obtained from the ... normal reaction due to track. (4) no frictional force may be produced between the wheels and the track.

Last Answer : (3) necessary centripetal force may be obtained from the horizontal component of the normal reaction due to track. Explanation: A vehicle moving at a fast speed on a straight rail/ road has ... it experiences an additional force, termed as centripetal force, acting towards the centre of the circle.

Railway tracks are banked on curves so that – (1) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (2) No frictional force may be produced between the tracks and the wheels of the train (3)Necessary centripetal force may be obtained from the horizontal component of the weight of the train (4) The train may not fall down inwards

Description : Railway tracks are banked on curves so that - (1) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (2) No frictional force may be produced between the ... the horizontal component of the weight of the train (4) The train may not fall down inwards

Last Answer : (3) Necessary centripetal force may be obtained from the horizontal component of the weight of the train

Railway tracks are banked on curves so that (1) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (2) No frictional force may be produced between the tracks and the wheels of the train (3) Necessary centripetal force may be obtained from the horizontal component of the weight of the train (4) The train may not fall down inwards

Description : Railway tracks are banked on curves so that (1) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (2) No frictional force may be produced between the ... the horizontal component of the weight of the train (4) The train may not fall down inwards

Last Answer : Necessary centripetal force may be obtained from the horizontal component of the weight of the train

A small gap is left at the joints of rails in a railway track to – (1) avoid the tracks being distorted due to seasonal temperature variation (2) avoid the heating of tracks to high temperature (3) control the speed of train (4) keep the rails equidistant

Description : A small gap is left at the joints of rails in a railway track to – (1) avoid the tracks being distorted due to seasonal temperature variation (2) avoid the heating of tracks to high temperature (3) control the speed of train (4) keep the rails equidistant

Last Answer : (1) avoid the tracks being distorted due to seasonal temperature variation Explanation: A small gap is left at the joints of rails in a railway track to provide space for the expansion of rail pieces when the temperature rises during summer.

A small gap is left at the joints of rails in a railway track to (1) avoid the tracks being distorted due to seasonal temperature variation (2) avoid the heating of tracks to high temperature (3) control the speed of train (4) keep the rails equidistant

Description : A small gap is left at the joints of rails in a railway track to (1) avoid the tracks being distorted due to seasonal temperature variation (2) avoid the heating of tracks to high temperature (3) control the speed of train (4) keep the rails equidistant

Last Answer : avoid the tracks being distorted due to seasonal temperature variation

If a boy sitting in a train, which is moving at a constant velocity, throws a ball straight up into the air, the ball will – (1) Fall in front of him (2) Fall behind him (3) Fall into his hand (4) None of the above

Description : If a boy sitting in a train, which is moving at a constant velocity, throws a ball straight up into the air, the ball will – (1) Fall in front of him (2) Fall behind him (3) Fall into his hand (4) None of the above

Last Answer : (3) Fall into his hand Explanation: If a person throws a ball vertically upwards in a moving train, it comes hack to his hand. The moment the ball was thrown, the ball was also in motion alone with ... ball move ahead by the same distance. This makes the ball to come back to his hand on its return.

If a boy sitting in a train, which is moving at a constant velocity, throws a ball straight up into the air, the ball will (1) fall in front of him (2) fall behind him (3) fall into his hand (4) None of the above

Description : If a boy sitting in a train, which is moving at a constant velocity, throws a ball straight up into the air, the ball will (1) fall in front of him (2) fall behind him (3) fall into his hand (4) None of the above

Last Answer :  fall into his hand

First railway station in India to have free high-speed Wi-Fi Internet facility? A. Chennai Central station B. Mumbai Central railway station C. Howrah Station D. New Delhi Station

Description : First railway station in India to have free high-speed Wi-Fi Internet facility? A. Chennai Central station B. Mumbai Central railway station C. Howrah Station D. New Delhi Station

Last Answer : B [Mumbai Central railway station] Explanation: The initiative started in January 2016 with Mumbai Central railway station being the first station to have free RailWire WiFi facility.

Draw a labelled diagram to show different trajectories of a satellite depending upon the tangential projection speed.

Description : Draw a labelled diagram to show different trajectories of a satellite depending upon the tangential projection speed.

Last Answer : Draw a labelled diagram to show different trajectories of a satellite depending upon the tangential projection speed.

In hydrodynamic bearing, (A) The axis of journal is eccentric with respect to axis of bearing (B) The axis of journal is concentric with respect to axis of bearing (C) The axis can be either eccentric or concentric depending upon speed (D) None of the above

Description : In hydrodynamic bearing, (A) The axis of journal is eccentric with respect to axis of bearing (B) The axis of journal is concentric with respect to axis of bearing (C) The axis can be either eccentric or concentric depending upon speed (D) None of the above

Last Answer : (A) The axis of journal is eccentric with respect to axis of bearing

In hydrostatic bearing, (A) The axis of journal is eccentric with respect to axis of bearing (B) The axis of journal is concentric with respect to axis of bearing (C) The axis can be either eccentric or concentric depending upon speed (D) None of the above

Description : In hydrostatic bearing, (A) The axis of journal is eccentric with respect to axis of bearing (B) The axis of journal is concentric with respect to axis of bearing (C) The axis can be either eccentric or concentric depending upon speed (D) None of the above

Last Answer : (B) The axis of journal is concentric with respect to axis of bearing