The relative motion between observer and frequency is called

The relative motion between observer and frequency is called
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1 Answer

Answer :

Doppler’s effect
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Related questions

Tick the wrong statement. a) Velocity of light is independent of the motion of the observer. b) Velocity of light in free space is the same in all directions. c) Velocity of light in free space is different in different directions. d) Absolute motion or absolute rest is meaningless to talk about

Description : Tick the wrong statement. a) Velocity of light is independent of the motion of the observer. b) Velocity of light in free space is the same in all directions. c) Velocity of light in free space is different in different directions. d) Absolute motion or absolute rest is meaningless to talk about

Last Answer : c) Velocity of light in free space is different in different directions

What transmission method does NOT depend on relative frequency or target motion?

Description : What transmission method does NOT depend on relative frequency or target motion?

Last Answer : Pulse modulation.

An observer moves towards a stationary plane mirror at a speed of 1 m/s. His image will move towards him at a speed of (a) 1 m/s (b) 4 m/s (c) 2 m/s (d) ½ m/s

Description : An observer moves towards a stationary plane mirror at a speed of 1 m/s. His image will move towards him at a speed of (a) 1 m/s (b) 4 m/s (c) 2 m/s (d) ½ m/s

Last Answer : Ans:(c)

The term ‘Blue Shift’ is used to indicate? A. Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object? B. Turning a star from white to blue C. In future sun would become blue D. Black hole was blue at its start E. None of these

Description : The term Blue Shift' is used to indicate? A. Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object? B. Turning a star from white ... . In future sun would become blue D. Black hole was blue at its start E. None of these

Last Answer : A. Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object?

How does an IFR observer measure the speeds of two craft going oppisite directions approaching "C"?

Description : How does an IFR observer measure the speeds of two craft going oppisite directions approaching "C"?

Last Answer : What the observer measures is two objects moving relative to them at 0.95C.

What is the largest field of view achievable by a magnifying lens system when the observer is not peering through a peephole?

Description : What is the largest field of view achievable by a magnifying lens system when the observer is not peering through a peephole?

Last Answer : answer:You just described a basic view camera. Light comes through the lens and is projected upon a glass freznal at the rear. The angle of view is determined by the lens choice on the front. This ... digital chip. Click the images to see the incredible detail. These images are 2-6 gigabyte each.

Will an observer falling into a black hole be able to witness all future events in the universe outside the black hole? -Space

Description : Will an observer falling into a black hole be able to witness all future events in the universe outside the black hole? -Space

Last Answer : No, completely opposite situation to the OP's expectations. If a falling observer will transmit a powerful beam of light out of the hole, then photons will reach increasingly far future of the exterior universe.

To an observer on the lunar surface, during the day time, how will the sky appear? -Do You Know?

Description : To an observer on the lunar surface, during the day time, how will the sky appear? -Do You Know?

Last Answer : answer:

Which are the permanent observer countries of UN ?

Last Answer : Palestine and Vatican City are the permanent observer countries of the United Nations.

What observer in New York State the duration of daylight increases continuously from?

Description : What observer in New York State the duration of daylight increases continuously from?

Last Answer : march to may

What does the hidden observer in hypnosis refers to?

Description : What does the hidden observer in hypnosis refers to?

Last Answer : The fact someone who is hypnotized still has a part of herself that knows what is going on Apex

What is the altitude of the north celestial pole for an observer located on the earth's equator?

Description : What is the altitude of the north celestial pole for an observer located on the earth's equator?

Last Answer : Feel Free to Answer

What type of report is submitted by the observer upon encountering enemy activly tohigher headquaters through the most secure means?

Description : What type of report is submitted by the observer upon encountering enemy activly tohigher headquaters through the most secure means?

Last Answer : Need answer

Where is an AA Alanon or Coda meeting in or near Enumclaw that I can visit as an observer?

Description : Where is an AA Alanon or Coda meeting in or near Enumclaw that I can visit as an observer?

Last Answer : There is a Al-Anon meeting near Enumclaw Friday May 29th in Port Orchard.

how would an observer on train a witch is moving at nearly the speed of light view o'clock on train be which is moving at the same speed and in the same direction?

Description : how would an observer on train a witch is moving at nearly the speed of light view o'clock on train be which is moving at the same speed and in the same direction?

Last Answer : The clock on train B would appear to be the same width and to run at the same rate

A building is 120 feet high. at a certain distance away from the building. an observer notices the angle of elevation to the top of the building is 41 degrees. how far is the observer from the base of the building?

Description : A building is 120 feet high. at a certain distance away from the building. an observer notices the angle of elevation to the top of the building is 41 degrees. how far is the observer from the base of the building?

Last Answer : 6

According to special theory of relativity the mass of a particle – (1) increases with increase in velocity with respect to an observer. (2) decreases with increase in velocity. (3) decreases with decrease in velocity. (4) is independent of its velocity.

Description : According to special theory of relativity the mass of a particle – (1) increases with increase in velocity with respect to an observer. (2) decreases with increase in velocity. (3) decreases with decrease in velocity. (4) is independent of its velocity.

Last Answer : (1) increases with increase in velocity with respect to an observer. Explanation: According to the Special Theory of Relativity, the mass of a moving object measures more as its velocity increases until, ... becomes infinite. This is because as an object gains speed, it gains more (kinetic) energy.

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.

Which of the following is an observer of FATF? A. Ireland B. Israel C. Saudi Arabia D. Both (B) and (C) E. All of the Above

Description : Which of the following is an observer of FATF? A. Ireland B. Israel C. Saudi Arabia D. Both (B) and (C) E. All of the Above

Last Answer : D. Both (B) and (C) Explanation: FATF Observer Countries: Israel Saudi Arabia

The noise from an airplane engine 100 ft from an observer is found to have an intensity of 45dB. What will be the intensity when the plane flies overhead at an altitude of 1 mi? A. 10.5 dB B. 34.5 dB C. 35 dB D. 20.5 dB

Description : The noise from an airplane engine 100 ft from an observer is found to have an intensity of 45dB. What will be the intensity when the plane flies overhead at an altitude of 1 mi? A. 10.5 dB B. 34.5 dB C. 35 dB D. 20.5 dB

Last Answer : A. 10.5 dB

To an observer on the lunar surface, during the day time, how will the sky appear?

Description : To an observer on the lunar surface, during the day time, how will the sky appear?

Last Answer : Black

Which is first English daily newspaper of Tripura? a) Tripura Observer b) Jagaran c) Tripura Times d) Dainik Sambad

Description : Which is first English daily newspaper of Tripura? a) Tripura Observer b) Jagaran c) Tripura Times d) Dainik Sambad

Last Answer : c) Tripura Times

Shanghai Cooperation Organization (SCO) has 4 observer states which are: (a) Iran, Mongolia, Sri Lanka, Turkey (b) Afghanistan, Nepal, Belarus, Azerbaijan (c) Iran, Afghanistan, Belarus, Turkey (d) Iran, Afghanistan, Belarus, Mongolia

Description : Shanghai Cooperation Organization (SCO) has 4 observer states which are: (a) Iran, Mongolia, Sri Lanka, Turkey (b) Afghanistan, Nepal, Belarus, Azerbaijan (c) Iran, Afghanistan, Belarus, Turkey (d) Iran, Afghanistan, Belarus, Mongolia

Last Answer : (a) Iran, Mongolia, Sri Lanka, Turkey

If h and h1 are the heights of a light house and the observer in a ship in metres above M S L then the horizontal distance from the ship to the light house in kilometres is (A) h + h1) (B) h - h1) (C) h × h1) (D) 3.86 h + h1)

Description : If h and h1 are the heights of a light house and the observer in a ship in metres above M S L then the horizontal distance from the ship to the light house in kilometres is (A) h + h1) (B) h - h1) (C) h × h1) (D) 3.86 h + h1)

Last Answer : (A) h + h1)

Which of the following article of Hahnemann is considered as precursor of ORGANON Options: 1) The Friends of Health 2) The Medicine of Experience 3) The Medical Observer 4) Cure and Prevention of Asiatic Cholera

Description : Which of the following article of Hahnemann is considered as precursor of ORGANON Options: 1) The Friends of Health 2) The Medicine of Experience 3) The Medical Observer 4) Cure and Prevention of Asiatic Cholera

Last Answer : Correct Answer: 2) The Medicine of Experience

A rod at rest appears to an observer just a mere point when he moves across it as speed, a) Equal to the speed of light b) Double the speed of light c) Three-fourth the speed of light d) None of the above

Description : A rod at rest appears to an observer just a mere point when he moves across it as speed, a) Equal to the speed of light b) Double the speed of light c) Three-fourth the speed of light d) None of the above

Last Answer : a) Equal to the speed of light

A proton beam moves towards an observer. The direction of magnetic induction is a) towards right b) anticlockwise c) towards left d) clockwise

Description : A proton beam moves towards an observer. The direction of magnetic induction is a) towards right b) anticlockwise c) towards left d) clockwise

Last Answer : d) clockwise

A thin film is observed in white light. The color of the film seen at a particular point depends upon (a)Location of observer (b)Width of the source (c) Distance of the source (d) Brightness of the source

Description : A thin film is observed in white light. The color of the film seen at a particular point depends upon (a)Location of observer (b)Width of the source (c) Distance of the source (d) Brightness of the source

Last Answer : (a)Location of observer

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

Two sources of sound placed close to each other, are emitting progressive waves given by y1 = 4 sin 600 t and y2 = 5 sin 608 t. An observer located near these two sources of sound will hear: (1) 4 beats per second with intensity ratio 81 : 1 between waxing and waning (2) 4 beats per second with intensity ratio 25 : 16 between waxing and waning (3) 8 beats per second with intensity ratio 25 : 16 between waxing and waning (4) 8 beats per second with intensity ratio 81 : 1 between waxing and waning

Description : Two sources of sound placed close to each other, are emitting progressive waves given by y1 = 4 sin 600 t and y2 = 5 sin 608 t. An observer located near these two sources of sound will ... between waxing and waning (4) 8 beats per second with intensity ratio 81 : 1 between waxing and waning

Last Answer : (1) 4 beats per second with intensity ratio 81 : 1 between waxing and waning

Write the code of signals used in ranging with respect to : i) Correct position ii) Fix the ranging rod iii) Vertical position of ranging rod iv) Move slowly to left of observer

Description : Write the code of signals used in ranging with respect to : i) Correct position ii) Fix the ranging rod iii) Vertical position of ranging rod iv) Move slowly to left of observer 

Last Answer : i) Correct position : Both hands above Head and then Brought Down ii) Fix the ranging rod : Both Arms extended forward horizontally and the hands depressed briskly iii) Vertical position of ranging rod : 1 ... and moved to the Left iv) Move slowly to left of observer : Slow sweeps with Left Hand

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

According to special theory of relativity the mass of a particle (1) increases with increase in velocity with respect to an observer. (2) decreases with increase in velocity. (3) decreases with decrease in velocity. (4) is independent of its velocity.

Description : According to special theory of relativity the mass of a particle (1) increases with increase in velocity with respect to an observer. (2) decreases with increase in velocity. (3) decreases with decrease in velocity. (4) is independent of its velocity.

Last Answer : increases with increase in velocity with respect to an observer.

The force which opposes the relative motion between different layers of liquid or gases is called – (1) Critical Velocity (2) Streamline Flow (3) Terminal Velocity (4) Viscous Force

Description : The force which opposes the relative motion between different layers of liquid or gases is called – (1) Critical Velocity (2) Streamline Flow (3) Terminal Velocity (4) Viscous Force

Last Answer : (4) Viscous Force Explanation: Critical Velocity – The maximum velocity upto which fluid motion is streamline is called Critical Velocity. Streamline Flow – If velocity of all fluid particles is same all the time then it can be said in streamline flow.

Who proposed this concept “All motion is relative”? A. Albert Einstein (Answer) B. John Kepler C. Galileo Galilie D. None

Description : Who proposed this concept “All motion is relative”? A. Albert Einstein (Answer) B. John Kepler C. Galileo Galilie D. None

Last Answer : A. Albert Einstein (Answer)

What's relative motion got to do with it?

Description : What's relative motion got to do with it?

Last Answer : 1. Yes, it does. Relative to the outside observer, the bullet before it is fired is actually moving at 100mph, together with the car. Firing the bullet and accelerating it to 100 mph relative to ... with the bullet. That you exploited a certain aspect of the laws of physics for that is irrelevant.

Which one of the following is not the law of dry friction? a.If friction is neglected, the reactions are always normal to the surfaces on contact b.Friction always acts to oppose the relative motion of the free body c.If static friction is acting, the value of the friction force may vary from zero to its maximum value d.The force of friction is always normal to the surface e.All of the above

Description : Which one of the following is not the law of dry friction? a.If friction is neglected, the reactions are always normal to the surfaces on contact b.Friction always acts to oppose the relative motion of ... its maximum value d.The force of friction is always normal to the surface e.All of the above

Last Answer : d. The force of friction is always normal to the surface

Coulomb friction is a.Friction between solids and liquids b.Friction between electrically charged bodies c.Friction between lubricated surface d.Friction between dry surfaces e.Friction between bodies having relative motion

Description : Coulomb friction is a.Friction between solids and liquids b.Friction between electrically charged bodies c.Friction between lubricated surface d.Friction between dry surfaces e.Friction between bodies having relative motion

Last Answer : d. Friction between dry surfaces

When the wavelength of a spectral line emitted from an object decreases which end of the visible light spectrum does it move toward and what is the object and motion relative to Earth?

Description : When the wavelength of a spectral line emitted from an object decreases which end of the visible light spectrum does it move toward and what is the object and motion relative to Earth?

Last Answer : Need answer

Relative to fexofenadine, diphenhydramine is more likely to (a) Be used for treatment of asthma (b) Be used for treatment of gastroesophageal reflux disease (c) Cause cardiac arrhythmias in overdose (d) Have efficacy in the prevention of motion sickness (e) Increase the serum concentration of warfarin

Description : Relative to fexofenadine, diphenhydramine is more likely to (a) Be used for treatment of asthma (b) Be used for treatment of gastroesophageal reflux disease (c) Cause cardiac arrhythmias in ... ) Have efficacy in the prevention of motion sickness (e) Increase the serum concentration of warfarin

Last Answer : Ans: D

For elasto-hydrodynamic lubrication (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space (B) There should be external source like pump to supply lubricant under pressure (C) There should be elastic deformation of the parts in contact (D) There should be metal to metal contact

Description : For elasto-hydrodynamic lubrication (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space (B) There should be external source like ... be elastic deformation of the parts in contact (D) There should be metal to metal contact

Last Answer : (C) There should be elastic deformation of the parts in contact

For hydrostatic lubrication (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space (B) There should be external source like pump to supply lubricant under pressure (C) There should be elastic deformation of the parts in contact (D) There should be metal to metal contact

Description : For hydrostatic lubrication (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space (B) There should be external source like pump to ... be elastic deformation of the parts in contact (D) There should be metal to metal contact

Last Answer : (B) There should be external source like pump to supply lubricant under pressure

For hydrodynamic lubrication (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space (B) There should be external source like pump to supply lubricant under pressure (C) There should be elastic deformation of the parts in contact (D) There should be metal to metal contact

Description : For hydrodynamic lubrication (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space (B) There should be external source like pump to ... be elastic deformation of the parts in contact (D) There should be metal to metal contact

Last Answer : (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space

Setscrews are (A) Similar to tap bolts except that a greater variety of shapes of heads are available (B) Slotted for screw driver and generally used with a nut (C) Used to prevent relative motion between parts (D) Similar to studs

Description : Setscrews are (A) Similar to tap bolts except that a greater variety of shapes of heads are available (B) Slotted for screw driver and generally used with a nut (C) Used to prevent relative motion between parts (D) Similar to studs

Last Answer : (C) Used to prevent relative motion between parts

Splines are used if, (A) The power to be transmitted is high (B) The torque to be transmitted is high (C) The speed is high (D) There is relative motion between shaft and hub

Description : Splines are used if, (A) The power to be transmitted is high (B) The torque to be transmitted is high (C) The speed is high (D) There is relative motion between shaft and hub

Last Answer : (D) There is relative motion between shaft and hub

In vibrometer, the relative motion between the mass and vibrating body is converted into proportional ________. (A) current (B) voltage (C) resistance (D) ampere

Description : In vibrometer, the relative motion between the mass and vibrating body is converted into proportional ________. (A) current (B) voltage (C) resistance (D) ampere

Last Answer : (B) voltage

With regard to nystagmus: a. caloric nystagmus occurs when iced water is poured into the ear b. vestibular nystagmus occurs as a consequence of head rotation c. optokinetic nystagmus occurs as a consequence of the relative motion of the visual field d. all above

Description : With regard to nystagmus: a. caloric nystagmus occurs when iced water is poured into the ear b. vestibular nystagmus occurs as a consequence of head rotation c. optokinetic nystagmus occurs as a consequence of the relative motion of the visual field d. all above

Last Answer : all above

The normal stress is the same in all directions at a point in a fluid, when the fluid is (A) Non-viscous (B) Incompressible (C) Both (A) and (B) (D) Having no motion of one fluid layer relative to the other

Description : The normal stress is the same in all directions at a point in a fluid, when the fluid is (A) Non-viscous (B) Incompressible (C) Both (A) and (B) (D) Having no motion of one fluid layer relative to the other

Last Answer : (D) Having no motion of one fluid layer relative to the other

The pressure intensity is the same in all directions at a point in a fluid (A) Only when the fluid is frictionless (B) Only when the fluid is at rest having zero velocity (C) When there is no motion of one fluid layer relative to an adjacent layer (D) Regardless of the motion of one fluid layer relative to an adjacent layer

Description : The pressure intensity is the same in all directions at a point in a fluid (A) Only when the fluid is frictionless (B) Only when the fluid is at rest having zero velocity (C) When there is ... relative to an adjacent layer (D) Regardless of the motion of one fluid layer relative to an adjacent layer

Last Answer : C) When there is no motion of one fluid layer relative to an adjacent layer