Optics Question 259

Question: A rocket is going away from the earth at a speed of 106 m/s If the wavelength of the light wave emitted by it be 5700AA , what will be its Doppler’s shift

[RPMT 1996]

Options:

A) 200AA

B) 19AA

C) 20AA

D) 0.2AA

Show Answer

Answer:

Correct Answer: B

Solution:

Δλλ=vc

Therefore Δλ=5700×1063×103=19AA



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