In the spectrum of light of a luminous heavenly body the wavelength of a spectral line is measured to be 4747 Å while actual wavelength of the line is 4700 Å. The relative velocity of the heavenly body with respect to earth will be (velocity of light is \[3\times {{10}^{8}}m/s\]) [MP PMT/PET 1998]

\[3\times {{10}^{5}}m/s\]moving towards the earth

\[3\times {{10}^{5}}m/s\]moving away from the earth

\[3\times {{10}^{6}}m/s\]moving away from the earth

In the spectrum of light of a luminous heavenly body the wavelength of

1.	In the spectrum of light of a luminous heavenly body the wavelength of a spectral line is measured to be 4747 Å while actual wavelength of the line is 4700 Å. The relative velocity of the heavenly body with respect to earth will be (velocity of light is \[3\times {{10}^{8}}m/s\]) [MP PMT/PET 1998]
A.	\[3\times {{10}^{5}}m/s\]moving towards the earth
B.	\[3\times {{10}^{5}}m/s\]moving away from the earth
C.	Infrared rays
D.	\[3\times {{10}^{6}}m/s\]moving away from the earth
Answer» E.

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