For a specific wavelength 670 nm of light coming from a galaxy moving with velocity v, the observed wavelength is 670.7 nm. The value of v is :

Question

3 $\times$ 10⁸ ms^$-$1

3 $\times$ 10¹⁰ ms^$-$1

3.13 $\times$ 10⁵ ms^$-$1

4.48 $\times$ 10⁵ ms^$-$1

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