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NEET 2008 Physics question

PhysicsDual Nature of Matter and RadiationNEET 2008

The work function of a surface of a photosensitive material is 6.2 eV. The wavelength of the incident radiation for which the stopping potential is 5 V lies in the

Answer: (2)

Solution

Einstein's photoelectric equation: , so . \frac{12400}{11.2}10^{-7}$\

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Question ID VK-089975