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A photoelectric surface is illuminated successively by monochromatic light of wavelength and 2. If the maximum kinetic energy of the emitted photoelectrons in the

A photoelectric surface is illuminated successively by monochromatic light of wavelength and 2. If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times that in the first case, the work function of the surface of the material is : (h= Planck's constant, c = speed of light) [2015 RS] hc (a) 2hc (b) hc hc 2

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