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A comet is approaching earth with speed ...

A comet is approaching earth with speed of 286 km/s. It is observed that the light coming from comet is shifted by `X xx 10^-10 m` wavelength of `630nm`, Find X

A

1

B

30

C

6

D

100

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2021-PHYSICS SECTION B
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