Photoelectric EffectHard

Question

An X-ray photon of wavelength l and frequency n collides with an intially stationary electron (but free to move) and bounces off. If l¢ and n¢ are respectively the wavelength and frequency of the scattered photon, then :

Options

A.λ′ = λ; ν′ = ν  
B.λ′ < λ; ν′ > ν  
C.λ′ > λ; ν′ > ν  
D.λ′ > λ; ν′ < ν  

Solution

Some of the energy of photon will be absorbed by the electron. Hence, energy of the photon will reduce correspendingly wavelength will increase and frequency decreases.

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