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KCET2007PhysicsDual Nature of Matter

Which one of the following graph represents the variation of maximum kinetic energy (E_ k ) of the emitted electrons with frequency v in photoelectric effect correctly?

Correct answer

3

Step-by-step solution

According to photoelectric equation E_ k =h v-h v₀ If the energy of photon (h v) is less than the work function (h v₀ ) of metallic surface, then electrons will never be ejected from surface regardless of intensity of incident light Also, from Eq. (i), when v=v₀, E_ k =0 Graph (d) represents variation of E_ k with v

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