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JEE PHYSICS MCQ: WAVE OPTICS

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The wavelength of a distant star is

5700\,\,\mathop {\text{A}}\limits^ \circ

and the spectral light has a shift

1.9\,\,\mathop {\text{A}}\limits^ \circ

towards red end then the velocity of star relative to earth will be:

View answer and explanation

Correct option: D

1 \times 10^5 \mathrm{~m} / \mathrm{sec}

Option D (

1 \times 10^5 \mathrm{~m} / \mathrm{sec}

) is correct because it is calculated using the Doppler shift formula.

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