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Class 12 NEET Physics Dual Nature of Matter and Radiation

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Question : 50

Total: 104

The electron in the hydrogen atom jumps from excited state (n=3) to its ground state (n=1) and the photons thus emitted irradiate a photosensitive material. If the work function of the material is 5.1eV, the stopping potential is estimated to be (the energy of the electron in nth state En=−

(2010 Mains)

5.1 V
12.1 V
17.2 V
7 V

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