The wavelength of a distant star is 5700 Å and the spectral light has a shift 1.9Å towards red end then the velocity of star relative to earth will be :- (1) 5 × 105 m/sec (2) 2 × 105 m/sec (3) 1.8 × 105 m/sec (4) 1 × 105 m/sec
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105 km shift it 1multiple by 105
Answered by
1
Answer:
105 km shift it 1multiple by 105
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