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KCET2019PhysicsWaves and Sound

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

Options

  1. A( 5 ~km / s )
  2. B( 25 ~km / s )
  3. C( 20 ~km / s )
  4. D( 10 ~km / s )

Correct answer

A. ( 5 ~km / s )

Step-by-step solution

(A) The formula for Doppler shift [ v= c= 0.1 6000 3 10⁸=0.5 10⁴=5 ~km ~s ⁻¹ ]

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