The wavelength of light received from a galaxy is 10% greater than that received from identical source on the earth. The velocity of the galaxy relative to the earth is

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3 x 108 ms–1

3 × 107 ms–1

3×106 ms-1

3 × 105ms–1

answer is B.

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Detailed Solution

∆λλ=VC=10100 V=3×107ms-1

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