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Due to Doppler's effect, the shift in wa...

Due to Doppler's effect, the shift in wavelength observed is 0.1 Å for a star producing wavelength 6000 Å. Velocity of recession of the star will be

A

5 km/s

B

25 km/s.

C

20 km/s

D

10 km/s

Text Solution

Verified by Experts

The correct Answer is:
A
`(Delta lamda)/( lamda) = (V )/(C ) `
` V-C ( Delt lamda )/( lamda) = 3 xx 10^8 xx (0.4 A)/( 6000 A ) implies = 3/6 xx 10^4 = 5 km//s `
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