MHT CET 2023 Physics question
Maximum kinetic energy of photon is 'E' when wavelength of incident radiation is ''. If wavelength of incident radiations is reduced to then the energy of photon becomes four times. Then work function of the metal is
Answer: (B)
Solution
The statement refers to the maximum kinetic energy of the emitted electrons. Einstein's equation . First case: . Second case (, energy becomes ): . Subtracting:
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