If a star emitting light of wavelength 500 nm is moving towards earth with a velocity of $1.5{\rm{ }} \times {\rm{ }}{10^6}m/s$ then the shift in the wavelength due to doppler’s effect will be:

$25\,\,\mathop {\rm{A}}\limits^ \circ $

$250\,\,\mathop {\rm{A}}\limits^ \circ $

$2.5\,\,\mathop {\rm{A}}\limits^ \circ $

NEET UG PHYSICS MCQ: WAVE OPTICS

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If a star emitting light of wavelength 500 nm is moving towards earth with a velocity of

1.5\mathrm{ } \times \mathrm{ }{10^6}m/s

then the shift in the wavelength due to doppler’s effect will be:

View answer and explanation

Correct option: A

25\,\,\mathop \mathrm{A}\limits^ \circ

The correct answer is A (

25\,\,\mathop \mathrm{A}\limits^ \circ \,

) because it is the calculated wavelength shift due to the Doppler effect.