Stars twinkle but planets do not twinkle because – (1) they emit light of a constant intensity (2) their distance from the earth does not change with time (3) they are very far away from the earth resulting in decrease in intensity of light (4) they are nearer to the earth and hence we receive a greater amount of light and therefore minor variations in intensity are not noticeable

Stars twinkle but planets do not twinkle because – (1) they emit light of a constant intensity (2) their distance from the earth does not change with time (3) they are very far away from the earth resulting in decrease in intensity of light (4) they are nearer to the earth and hence we receive a greater amount of light and therefore minor variations in intensity are not noticeable
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(4) they are nearer to the earth and hence we receive a greater amount of light and therefore minor variations in intensity are not noticeable Explanation: Eris is the most massive and second-largest dwarf planet known in the Solar System. It is 27% more massive than dwarf planet Pluto. Eris is the ninth-most-massive known body directly orbiting the Sun, and the largest known body in the Solar System not visited by a spacecraft.
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Stars twinkle but planets do not twinkle because (1) they emit light of a constant intensity (2) their distance from the earth does not change with time (3) they are very far away from the earth resulting in decrease in intensity of light (4) they are nearer to the earth and hence we receive a greater amount of light and therefore minor variations in intensity are not noticeable

Description : Stars twinkle but planets do not twinkle because (1) they emit light of a constant intensity (2) their distance from the earth does not change with time (3) they are very far away from ... and hence we receive a greater amount of light and therefore minor variations in intensity are not noticeable 

Last Answer : they are nearer to the earth and hence we receive a greater amount of light and therefore minor variations in intensity are not noticeable

Planets do not twinkle because they (a) emit light continuously (b) are luminous sources of light (c) are nearer to us and therefore their light does not pass through the atmosphere (d) are nearer to us and therefore minor variations in their intensity are not noticeable

Description : Planets do not twinkle because they (a) emit light continuously (b) are luminous sources of light (c) are nearer to us and therefore their light does not pass through the atmosphere (d) are nearer to us and therefore minor variations in their intensity are not noticeable

Last Answer : Ans:(d)

The heavenly bodies that do not twinkle are called ………………. . (a) planets (b) stars (c) rockets

Description : The heavenly bodies that do not twinkle are called ………………. . (a) planets (b) stars (c) rockets

Last Answer : (a) planets

People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude to 5400 metres have around 8 million. This is because at high altitude (a) people eat more nutritive food, therefore more RBCs are formed (b) people get pollution-free air to breath and more oxygen is available (c) atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive (d) there is more UV radiation which enhances RBC production.

Description : People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude to 5400 metres have around 8 million. This is because at high altitude ... required amount of O2 to survive (d) there is more UV radiation which enhances RBC production.

Last Answer : (c) atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive

Why are there jets in the midlatitudes in the upper troposphere? (a) Air is warmer in the tropics than the poles, resulting in a poleward pressure gradient that increases with increasing height. (b) Because air near the surface experiences the drag of surface friction, while air in the upper troposphere does not. (c) Due to variations in temperature between continents and ocean. (d) Due to the constant bending by the Coriolis force. (e) Both A and D are correct.

Description : Why are there jets in the midlatitudes in the upper troposphere? (a) Air is warmer in the tropics than the poles, resulting in a poleward pressure gradient that increases with increasing height. (b) Because ... d) Due to the constant bending by the Coriolis force. (e) Both A and D are correct.

Last Answer : (e) Both A and D are correct.

A hollow sphere and a solid sphere of the same material and equal radii are heated to the same temperature. In this case, (A) The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant (B) Both the spheres will emit equal amount of radiation per unit time in the beginning (C) Both will absorb equal amount of radiation from the surrounding in the beginning (D) Both (B) & (C)

Description : A hollow sphere and a solid sphere of the same material and equal radii are heated to the same temperature. In this case, (A) The cooling rate will be the same for the two spheres and hence the ... equal amount of radiation from the surrounding in the beginning (D) Both (B) & (C)

Last Answer : (D) Both (B) & (C)

Asteroids, are also called as minor planets found between the orbits of - (1) Jupiter and Saturn (2) Earth and Mars (3) Mars and Jupiter (4) Venus and Mercury

Description : Asteroids, are also called as minor planets found between the orbits of - (1) Jupiter and Saturn (2) Earth and Mars (3) Mars and Jupiter (4) Venus and Mercury

Last Answer : (3) Mars and Jupiter Explanation: Asteroids are minor planets, especially of the inner Solar System. The majority of known asteroids orbit within the asteroid belt between the orbits of Mars and Jupiter, generally in relatively 10w-eccentricity (i.e. not very elongated) orbits.

The heavenly bodies that twinkle are called ……………………. . (a) earth (b) moon (c) stars

Description : The heavenly bodies that twinkle are called ……………………. . (a) earth (b) moon (c) stars

Last Answer : (c) Stars

Mark the correct answer (a) Planets have an apparent motion and twinkle (b) Planets have no apparent motion but twinkle (c) Planets have an apparent motion but do not twinkle (d) Planets have no apparent motion and do not twinkle

Description : Mark the correct answer (a) Planets have an apparent motion and twinkle (b) Planets have no apparent motion but twinkle (c) Planets have an apparent motion but do not twinkle (d) Planets have no apparent motion and do not twinkle

Last Answer : Ans:(c)

Planets are (a) luminous bodies that twinkle (b) non-luminous bodies that twinkle (c) luminous bodies that do not twinkle (d) non-luminous bodies that do not twinkle

Description : Planets are (a) luminous bodies that twinkle (b) non-luminous bodies that twinkle (c) luminous bodies that do not twinkle (d) non-luminous bodies that do not twinkle

Last Answer : Ans:(d)

Planets 1. are luminous bodies 2. twinkle 3. are non-luminous bodies 4. do not twinkle Which of the above statements is/are correct? (a) 1 and 2 (b) 1 and 4 (c) 2 and 3 (d) 3 and 4

Description : Planets 1. are luminous bodies 2. twinkle 3. are non-luminous bodies 4. do not twinkle Which of the above statements is/are correct? (a) 1 and 2 (b) 1 and 4 (c) 2 and 3 (d) 3 and 4

Last Answer : Ans:(d)

Why do stars twinkle more on certain nights, compared to others?

Description : Why do stars twinkle more on certain nights, compared to others?

Last Answer : My understanding is that the particulate matter in the various layers of earth's atmosphere get in the path of the photons traveling toward us; the twinkling is the particles briefly diffracting ... is little-to no twinkling effect as there are far fewer particles in zero atmospheric conditions.

Why do the stars twinkle in the sky? -General Knowledge

Description : Why do the stars twinkle in the sky? -General Knowledge

Last Answer : answer:

Stars in the sky appear to twinkle due to – (1) a series of refractions (2) a series of reflections (3) a surface tension phenomenon (4) multiple diminishing brightness

Description : Stars in the sky appear to twinkle due to – (1) a series of refractions (2) a series of reflections (3) a surface tension phenomenon (4) multiple diminishing brightness

Last Answer : (1) a series of refractions Explanation: The movement of air (sometimes called turbulence) in the atmosphere of Earth causes a series of refractions which makes the starlight to get slightly bent as it ... directly and some gets bent slightly away. To our eyes, this makes the star seem to twinkle.

Why do the stars twinkle?

Description : Why do the stars twinkle?

Last Answer : Ans: The light from the stars travels through different layers of space of varying densities. Therefore, the light rays deviate from their original path. Further, these layers are not stationary but keep on moving. This leads to the twinkling of stars.

Stars in the sky appear to twinkle due to (1) a series of refractions (2) a series of reflections (3) a surface tension phenomenon (4) multiple diminishing brightness

Description : Stars in the sky appear to twinkle due to (1) a series of refractions (2) a series of reflections (3) a surface tension phenomenon (4) multiple diminishing brightness 

Last Answer : a series of refractions

Do stars emit of reflect light?

Description : Do stars emit of reflect light?

Last Answer : They emit their own light.

The temperature of Thiruvananthapuram is lower than that of Mumbai in May and higher than that of Mumbai in January, because: [IAS 2004] (a) Thiruvananthapuram has cold current and Mumbai is faced with warm current (b) Thiruvananthapuram has higher rainfall in summer and it is nearer to the equator (c) Thiruvananthapuram is on the windward side and Mumbai is on the leeward side (d) Thiruvananthapuram is Vegetated while Mumbai is not

Description : The temperature of Thiruvananthapuram is lower than that of Mumbai in May and higher than that of Mumbai in January, because: [IAS 2004] (a) Thiruvananthapuram has cold current and Mumbai is faced ... side and Mumbai is on the leeward side (d) Thiruvananthapuram is Vegetated while Mumbai is not

Last Answer : Ans: (b)

Cherapunji receives more rainfall than Shillong because: (a) the former is nearer to the sea (b) the air of different densities and temperature tends to converge towards Cherapunjl from different direction during the rainy season (c) Cherapunji is located on the windward side (d) convective precipitation brings more rain at Cherapunji

Description : Cherapunji receives more rainfall than Shillong because: (a) the former is nearer to the sea (b) the air of different densities and temperature tends to converge towards Cherapunjl from ... Cherapunji is located on the windward side (d) convective precipitation brings more rain at Cherapunji

Last Answer : Ans: (b)

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

Light travels faster in a material with a lower refractive index. Therefore, light rays that travel a longer distance in a lower refractive index travel at a greater average velocity. What effect does this have on multimode graded-index fiber modal dispersion and bandwidth?

Description : Light travels faster in a material with a lower refractive index. Therefore, light rays that travel a longer distance in a lower refractive index travel at a greater average velocity. What effect does this have on multimode graded-index fiber modal dispersion and bandwidth?

Last Answer : Decreases the time difference between light rays, which reduces modal dispersion and increases fiber bandwidth.

Pulsars are : (1) stars moving towards the Earth (2) stars moving away from Earth (3) rapidly spinning stars (4) high temperature stars

Description : Pulsars are : (1) stars moving towards the Earth (2) stars moving away from Earth (3) rapidly spinning stars (4) high temperature stars

Last Answer : (3) rapidly spinning stars Explanation: Pulsars are celestial objects, thought to be rapidly spinning stars, that emits regular pulses of radiowaves and other electromagnetic radiation at the rate of upto one thousand pulses per second.

Pulsars are – (1) stars moving towards the Earth (2) stars moving away from Earth (3) rapidly spinning stars (4) high temperature stars

Description : Pulsars are – (1) stars moving towards the Earth (2) stars moving away from Earth (3) rapidly spinning stars (4) high temperature stars

Last Answer : (3) rapidly spinning stars Explanation: The word "pulsar" is a contraction of "pulsating star. A pulsar is formed when a massive star collapses exhausts its supply of fuel. It blasts out ... an object composed primarily of neutrons packed so tightly that they no longer exist as normal matter.

The freezer in a refrigerator is fitted near the top – (1) to keep it away from hot compressor which is nearer to the bottom (2) because of convenience (3) it facilitates convection currents (4) to minimise power consumption

Description : The freezer in a refrigerator is fitted near the top – (1) to keep it away from hot compressor which is nearer to the bottom (2) because of convenience (3) it facilitates convection currents (4) to minimise power consumption

Last Answer : (3) it facilitates convection currents Explanation: The freezer in a refrigerator is fitted near the top so that it can cool the whole interior by setting up ... compartment temperature excessively causes difficulties in maintaining above-reezing temperature in the refrigerator compartment.

The freezer in a refrigerator is fitted near the top (1) to keep it away from hot compressor which is nearer to the bottom (2) because of convenience (3) it facilitates convection currents (4) to minimise power consumption

Description : The freezer in a refrigerator is fitted near the top (1) to keep it away from hot compressor which is nearer to the bottom (2) because of convenience (3) it facilitates convection currents (4) to minimise power consumption

Last Answer : it facilitates convection currents

The danger signals are red while the eye is more sensitive to yellow because – (1) absorption in red is less than yellow and hence red is visible from a distance (2) scattering in yellow light is less than red (3) the wavelength of red light is more than yellow light (4) none of the above reasons

Description : The danger signals are red while the eye is more sensitive to yellow because – (1) absorption in red is less than yellow and hence red is visible from a distance (2) scattering in yellow light is less than red (3) the wavelength of red light is more than yellow light (4) none of the above reasons

Last Answer : (3) the wavelength of red light is more than yellow light

How to determine the distance between planets and stars ?

Description : How to determine the distance between planets and stars ?

Last Answer : The distance between planets and stars can be determined with the information about how long it takes for a particle of light to reach that planet . Example: Given , it takes time for light to travel from Earth ... km Sutarang, the distance between the Earth and the Moon : 552 meters

India's latitudinal and longitudinal extent measured in degrees are almost the same, but its north-south extent measured in km is greater than its east-west extent. This is due to the fact that (a) longitudes are not parallel lines (b) the distance between latitudes remains the same but the distance between longitudes is greatest at the Equator and nil at the poles where all longitudes join (c) all longitudes with their opposites form great circles (d) the earth is not a perfect sphere

Description : India's latitudinal and longitudinal extent measured in degrees are almost the same, but its north-south extent measured in km is greater than its east-west extent. This is due to the fact that (a) ... (c) all longitudes with their opposites form great circles (d) the earth is not a perfect sphere

Last Answer : Ans: (b)

Pick up the incorrect statement from the following. Intake of water supply should (A) Be nearer to the treatment plant (B) Receive water from purer zone of the source (C) Be located downstream of waste water disposal point (D) Remain easily accessible during floods

Description : Pick up the incorrect statement from the following. Intake of water supply should  (A) Be nearer to the treatment plant  (B) Receive water from purer zone of the source  (C) Be located downstream of waste water disposal point  (D) Remain easily accessible during floods 

Last Answer : (C) Be located downstream of waste water disposal point 

In ammonia synthesis (N2 + 3H2 = 2NH3 ), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should becarried out at(A) Low pressure(B) High pressure(C) Very high temperature(D) Atmospheric pressure; as the pressure has no effect on conversion

Description : In ammonia synthesis (N2 + 3H2 = 2NH3 ), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should becarried out at (A) Low pressure (B) High pressure (C) Very high temperature (D) Atmospheric pressure; as the pressure has no effect on conversion

Last Answer : (B) High pressure

According to Hugo de Vries, the mechanism of evolution is :- (1) Multiple step mutations (2) Saltation (3) Phenotypic variations (4) Minor mutations

Description : According to Hugo de Vries, the mechanism of evolution is :- (1) Multiple step mutations (2) Saltation (3) Phenotypic variations (4) Minor mutations

Last Answer : (2) Saltation

………………… do not have their own light. (a) stars (b) planets (c) bulbs

Description : ………………… do not have their own light. (a) stars (b) planets (c) bulbs

Last Answer : (b) planets

………………….. have their own light. (a) Stars (b) Planets (c) Asteroids

Description : ………………….. have their own light. (a) Stars (b) Planets (c) Asteroids

Last Answer : (a) Stars

Match the following: [IAS 2007] Town River Nearer to it A. Betul 1.lndravati B. Jagdalpur 2. Narmada C. Jabalpur 3. Shipra D. Ujjain 4. Tapti A B C D (a) 1 4 2 3 (b) 4 1 2 3 (c) 4 1 3 2 (d) 1 4 3 2

Description : Match the following: [IAS 2007] Town River Nearer to it A. Betul 1.lndravati B. Jagdalpur 2. Narmada C. Jabalpur 3. Shipra D. Ujjain 4. Tapti A B C D (a) 1 4 2 3 (b) 4 1 2 3 (c) 4 1 3 2 (d) 1 4 3 2

Last Answer : Ans: (b)

Where are the hot deserts generally found? (1) On the eastern margins of the Tropics (2) On the western margins of the Tropics (3) Nearer the Equator (4) In the middle of the Continents

Description : Where are the hot deserts generally found? (1) On the eastern margins of the Tropics (2) On the western margins of the Tropics (3) Nearer the Equator (4) In the middle of the Continents

Last Answer : (2) On the western margins of the Tropics Explanation: The deserts lie in the belt of the trade winds which blow from northeast in the northern hemisphere and southeast in the southern hemisphere. ... west side of continents. Examples are the Thar Desert in Pakistan and the Atacama desert in Chile.

If the time between a lightning flash and the resulting thunder is five seconds, approximately how far away was the lightning?

Description : If the time between a lightning flash and the resulting thunder is five seconds, approximately how far away was the lightning?  

Last Answer : ANSWER: WBOUT ONE MILE (ACCEPT 5300-5800 FEET)

Which of the following terms refers to the decrease in lens flexibility that occurs with age, resulting in the near point of focus getting farther away? a) Presbyopia Presbyopia usually begins in the fifth decade of life, when reading glasses are required to magnify objects. b) Presbycusis Presbycusis refers to age-related hearing loss. c) Cataract Cataract is the development of opacity of the lens of the eye. d) Glaucoma Glaucoma is a disease characterized by increased intraocular pressure.

Description : Which of the following terms refers to the decrease in lens flexibility that occurs with age, resulting in the near point of focus getting farther away? a) Presbyopia Presbyopia usually begins in ... lens of the eye. d) Glaucoma Glaucoma is a disease characterized by increased intraocular pressure.

Last Answer : a) Presbyopia Presbyopia usually begins in the fifth decade of life, when reading glasses are required to magnify objects.

The stars of the universe are divided into how many parts according to the intensity of their light ?

Description : The stars of the universe are divided into how many parts according to the intensity of their light ?

Last Answer : The stars of the universe are divided into three parts according to the intensity of their light.

Warm colours make the object _______ a. Appear larger and nearer to the observer b. Appear far and reduced in size. c. Look dull and depressing. d. Invisible to the viewer.

Description : Warm colours make the object _______ a. Appear larger and nearer to the observer b. Appear far and reduced in size. c. Look dull and depressing. d. Invisible to the viewer.

Last Answer : a. Appear larger and nearer to the observer

Twinkling of stars and non-twinkling of planets is accounted for by (a) scattering of light (b) dispersion of light (c) atmospheric refraction (d) none of these

Description : Twinkling of stars and non-twinkling of planets is accounted for by (a) scattering of light (b) dispersion of light (c) atmospheric refraction (d) none of these

Last Answer : (c) atmospheric refraction

During the monsoon season rainfall decreases from the Ganga delta to the Punjab plains. It is because: (a) monsoon current moves westward along the Ganga plain and becomes drier (b) western regions are warmer than the eastern region (c) hills do not form barriers for winds (d) the area is far away from the sea

Description : During the monsoon season rainfall decreases from the Ganga delta to the Punjab plains. It is because: (a) monsoon current moves westward along the Ganga plain and becomes drier (b) western regions are warmer than ... (c) hills do not form barriers for winds (d) the area is far away from the sea

Last Answer : Ans: (a)

“All thugs are murderers Therefore all Indians are murderers”. The fallacy committed by above argument is A) Illicit minor B) Illicit major C) Ambiguous major D) Undistributed middle.

Description : “All thugs are murderers  Therefore all Indians are murderers”.  The fallacy committed by above argument is  A) Illicit minor  B) Illicit major  C) Ambiguous major  D) Undistributed middle. 

Last Answer : A) Illicit minor 

“All men are selfish No apes are men Therefore no apes are selfish”. The above argument commits the fallacy of A) Undistributed middle B) Illicit major C) Illicit minor D) Ambiguous minor

Description : “All men are selfish  No apes are men  Therefore no apes are selfish”.  The above argument commits the fallacy of  A) Undistributed middle  B) Illicit major  C) Illicit minor  D) Ambiguous minor

Last Answer : B) Illicit major

“All men are mortal All kings are men Therefore all kings are mortal”. __________ is the minor term of the above argument. A) Mortal B) Kings C) Men D) Are

Description : “All men are mortal  All kings are men  Therefore all kings are mortal”.  __________ is the minor term of the above argument.  A) Mortal  B) Kings  C) Men  D) Are

Last Answer :  B) Kings 

“He is either a saint or a sinner He is not a saint Therefore he is a sinner”. The above argument commits the fallacy of________. A) Undistributed middle B) Improper disjunction C) Four terms D) Illicit minor.

Description : “He is either a saint or a sinner  He is not a saint  Therefore he is a sinner”.  The above argument commits the fallacy of________.  A) Undistributed middle  B) Improper disjunction  C) Four terms  D) Illicit minor. 

Last Answer :  B) Improper disjunction

“ All donkeys are animals. All monkeys are animals. Therefore all monkeys are donkeys”. The fallacy committed by the above syllogism is A) Ambiguous major B) Ambiguous minor C) Ambiguous middle D) Undistributed middle.

Description : “ All donkeys are animals. All monkeys are animals. Therefore all monkeys are donkeys”. The fallacy committed by the above syllogism is A) Ambiguous major B) Ambiguous minor C) Ambiguous middle D) Undistributed middle.  

Last Answer : D) Undistributed middle. 

“ Food is indispensable to life. Plantain is a food. Therefore plantain is indispensable to life.” The fallacy committed by the above syllogism is A) Ambiguous major B) Ambiguous minor C) Ambiguous middle D) Undistributed middle.

Description : “ Food is indispensable to life. Plantain is a food. Therefore plantain is indispensable to life.” The fallacy committed by the above syllogism is A) Ambiguous major B) Ambiguous minor C) Ambiguous middle D) Undistributed middle. 

Last Answer : C) Ambiguous middle 

“B is a friend of C. A is a friend of B. Therefore A is a friend of C.” The above syllogism commits the fallacy of__________. A) quarterino-terminorum B) ambiguous major C) ambiguous minor D) equivocation.

Description : “B is a friend of C.  A is a friend of B.  Therefore A is a friend of C.”  The above syllogism commits the fallacy of__________.  A) quarterino-terminorum  B) ambiguous major   C) ambiguous minor  D) equivocation. 

Last Answer : A) quarterino-terminorum