Waves questions
1337 published questions with worked solutions.
- For which of the following waves is the Doppler effect not applicable?
- When the light source is moving towards an observer,
- Which of the following is not the use of Doppler effect?
- In the context of Doppler effect in light, the term red shift signifies
- If a star is moving towards the earth, then the lines are shifted towards
- A star is emitting yellow light. If it is accelerated towards earth, then to an observer on earth, it will appear
- The observed wavelength of light coming from a distant galaxy is found to be increased by 0.5% as compared with that coming from...
- A spectral line =5000 Å in the light coming from a distant star is observed as 5200 Å. What will be recession velocity of the...
- A star moves away from earth at speed 0.8 c while emitting light of frequency 6 10^ 14 Hz. What frequency will be observed on the...
- A light source approaches the observer with velocity 0.8 c. The Doppler shift for the light of wavelength 5500 Å
- A star producing light of wavelength 6000 Å moves away from the earth with a speed of 5 km/s. Due to Doppler effect, the shift in...
- A rocket is moving away from the earth at a speed of 6 10^ 7 m/s. The rocket has blue light in it. What will be the wavelength of...
- Through which character we can distinguish the light waves from sound waves [CBSE PMT 1990, RPET 2000, RPET 2002]
- A star is moving away from the earth with a velocity of 100 km/s . If the velocity of light is 3 10^ 8 m/s , then the shift of...
- How fast a person should drive his car so that the red signal of light appears green? (Wavelength for red colour =6200 Å and...
- With what speed should a galaxy move with respect to us so that a certain line at 674 nm is observed at 674.4 nm ?
- The 6563 Å line emitted by hydrogen atom in a star is found to be red shifted by 5 Å . The speed with which the star is receding...
- If the shift of wavelength of light emitted by a star is towards violet, then this shows that star is [RPET 1996, RPMT 1999,...
- The velocity of a moving galaxy is 300 km ,s^ -1 and the apparent change in wavelength of a spectral line emitted from the galaxy...
- As a spherical wavefront propagates, the amplitude (a) of a spherical wavefront varies with the distance r of the source
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