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JEE Advanced 2017 Paper 2

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Question : 1

Total: 54

A photoelectric material having work function ϕ0 is illuminated with light of wavelength λ(λ<h

) fastest photoelectron has a de Broglie wavelength λd.A change in wavelength of the incident light by Δλ results in a change Δλd in λd. Then the ratio

is proportional to :

λd3
λ2
λd2
λ2
λd
λ
λd3
λ

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