Question

The wavelength of light observed on the earth, from a moving star is found to decrease by 0.05%.
Relative to the earth the star is;
a. Moving away with a velocity of 1.5 x 10 m/s
b. Moving away with a velocity of 1.5 x 104m/s
c. coming closer with a velocity of 1.5 x 10 m/s
d. coming closer with a velocity of 1.5 x 10^m/s​

Answer 1

Answer:

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