A Photoelectric material having work-function ϕ0 is illuminated with light of wavelength λλ

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λd2/λ2

λd/λ

λd3/λ

λd3/λ2

answer is D.

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Detailed Solution

hcλ−ϕ=Kmax=12mhλd2 ∵Kmax=P22m After differentiating, ⇒hcλ2Δλ=h22m2λd3Δλd⇒ΔλdΔλ=(mc)hλd3λ2⇒ΔλdΔλ∝λd3λ2

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