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The wavelength of Halpha line in hydrog...

The wavelength of `H_alpha` line in hydrogen spectrum was found 6563Å in the laboratory. If the wavelength of same line in the spectrum of a milky way is observed to be 6586Å, then the recessional velocity of the milky way will be

A

`0.105 xx 10^(6) ms^(-1)`

B

`1.05 xx 10^(6) ms^(-1)`

C

`10.5 ms^(-1)`

D

none of these

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The correct Answer is:
B
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