Questions
A photoelectric surface is illuminated successively by monochromatic light of wavelength and
. If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times than in the first case, the work function of the surface of the material is (h = Plank’s constant, c= speed of light)
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Correct option is B
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The maximum energy of photoelectrons emitted in a photoelectric cells is measured using lights of various frequencies v. The graph in shows how varies with v. The slope of the graph is equal to
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