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NEET 2017 Physics question

PhysicsDual Nature of Matter and RadiationNEET 2017

The photoelectric threshold wavelength of silver is . The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength is (Given and )

Answer: (1),(2)

Solution

Work function (using ). Photon energy , so $ = 4.89-3.82 = 1.077\ eV =

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Question ID VK-092032