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Astronomical wavelength increase due to ...

Astronomical wavelength increase due to doppler effect known as

A

Red shift

B

Voilet shift

C

UV

D

IR shift

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The correct Answer is:
A
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Assertion : The increase in wavelength due to doppler effect is termed as red shift. Reason : In red shift, a wavelength in the middle of the visible region of the spectrum moves towards the violet end of the spectrum.

Doppler effect is due to

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