A star emitting radiation at a wavelength of $5000\mathring{\mathrm{A}}$ is approaching earth with a velocity of $1.5 imes 10^{6}m/s$. The change in wavelength of the radiation as received on the earth, is

Question

A star emitting radiation at a wavelength of $5000\mathring{\mathrm{A}}$ is approaching earth with a velocity of $1.5 	imes 10^{6}m/s$. The change in wavelength of the radiation as received on the earth, is

Dr. Abubacker · Accepted Answer

(a) $\mathrm{\Delta}\lambda = \lambda.\frac{v}{c} = \frac{1.5 	imes 10^{6}}{3 	imes 10^{8}} 	imes 5000 = 25\mathring{\mathrm{A}}$

Q. A star emitting radiation at a wavelength of $5000\mathring{\mathrm{A}}$ is approaching earth with a velocity of $1.5 \times 10^{6}m/s$. The change in wavelength of the radiation as received on the earth, is

Explanation

Reviewed by Dr. Abubacker

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