Calculate the speed of a galaxy emitting light of wavelength m which when received on…

PHYSICS · Subjective · A Level · Physics · Astrophysics · Astrophysics

Problem

Calculate the speed of a galaxy emitting light of wavelength

5.48 \times 10^{-7}

m which when received on earth is measured to have a wavelength of

5.65 \times 10^{-7}