The apparent wavelength of the light from a star moving away from the earth is 0.01% more than its real wavelength. Then the velocity of star is

Options :
  1. 60 Km/sec
  2. 15Km/sec
  3. 150 Km/sec
  4. 30 Km/sec
Answer and Explanation :-

Answer: Option 4

Explanation:

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