Wave Optics Tes...

A rocket is moving away from the earth at a speed of 6 × 10⁷ m/s. The rocket has blue light in it. What will be the wavelength of light recorded by an observer on the earth? (wavelength of blue light = 4600 Å)

A spectral line λ = 5000 Å in the light coming from a distant star is observed as a 5200 Å. What will be recession velocity of the star?

Three observes A, B and C measure the speed of light coming from a source to be v_A, v_B and v _C. The observer A moves towards the source, the observer C moves away from the source with the same speed. The observer B stays stationary. The surrounding space is vacuum every where. Then

The velocity of light emitted by a source S observed by an observer O, who is at rest with respect to S is c. If the observer moves towards S with velocity v, the velocity of light as observed will be

In the context of Doppler effect in light, the term \'red shift\' signifies

The sun is rotating about its own axis. The spectral lines emitted from the two ends of its equator, for an observer on the earth, will show

A star is moving away from the earth with a velocity of 100 km/s. If the velocity of light is 3 × 10⁸m/s then the shift of its spectral line of wavelength 5700 Å due to Doppler\'s effect will be

If a source of light is moving away from a stationary observer, then the frequency of light wave appears to change because of

A star emitting radiation at a wavelength of 5000 Å is approaching earth with a velocity of 1.5 × 10⁶ m/s. The change in wavelength of the radiation as received on the earth, is

A star emitting light of wavelength 5896 Å is moving away from the earth with a speed of 3600 km/s. The wavelength of light observed on earth will
(c = 3 x 108 m/s is the speed of light)