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MHT CET Physics question

PhysicsDual Nature of Matter and RadiationMHT CET

The work function for aluminium is 4.125 eV. The cut-off wavelength for photoelectric effect for aluminium will be

Answer: (C)

Solution

\dfrac{hc}{φ}\dfrac{1240\ eV nm}{4.125\ eV}$≈ 300\

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Question ID VK-083680