Teaching RPSC School Lecturer Mock Test Series 2024 Physics Relativity Doppler Effect for Light

The apparent wavelength of light coming from a star which is moving away from earth is 0.05% more than its actual wavelength. Then the speed of star is

1

120 km/s

2

100 km/s

3

190 km/s

4

150 km/s

5

Question Not Attempted

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