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In hydrogen spectrum the wavelength of H...

In hydrogen spectrum the wavelength of `H_(a)` line is `656nm, ` where in the spectrum of a distance galaxy `H_(a)` line wavelength is `706 nm` . Estimated speed of the galaxy with respect to earth is ,

A

`2 xx 10^(8) m//s`

B

`2 xx 10^(7) m//s`

C

`2 xx 10^(6) m//s`

D

`2 xx 10^(5) m//s`

Text Solution

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The correct Answer is:
B
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