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MHT CET Physics question

PhysicsWavesMHT CET

A rocket is moving away from the earth at a speed of m/s. The rocket has blue light in it. What will be the wavelength of light recorded by an observer on the earth? (wavelength of blue light = 4600 Å)

Answer: (B)

Solution

For a receding source Å; 4600 Å means no shift

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Question ID VK-077213