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MHT CET Physics question

PhysicsDual Nature of Matter and RadiationMHT CET

If the electron in hydrogen atom jumps from second Bohr orbit to ground state and difference between energies of the two states is radiated in the form of photons. If the work function of the material is 4.2 eV, then stopping potential is (Energy of electron in th orbit eV) [MHTCET 2017]

Answer: (C)

Solution

The photon energy is eV, so eV and V; 2 V, 4

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Question ID VK-084917