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MHT CET 2023 Physics question

PhysicsDual Nature of Matter and RadiationMHT CET 2023

A metal surface of work function 1.13 eV is irradiated with light of wavelength 310 nm. The retarding potential required to stop the escape of photoelectrons is [Take =1240 x 10 SI units]

Answer: (B)

Solution

Energy of each photon in electron-volts: . Einstein's equation: . The stopping (retarding) potential is therefore $=2.87\

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Question ID VK-096320