Optics Question 258

Question: 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:

A) 2.5 km/s

B) 10 km/s

C) 5 km/s

D) 20 km/s

Show Answer

Answer:

Correct Answer: C

Solution:

Δλλ=vc ∴v=Δλλc=0.16000×3×105km/s=5 km/s

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