Question

The threshold frequency of a metal ‘M’ is 1.5 x 10^15 / s . The maximum K.E. of the photoelectrons, when the metal is irradiated with radiations of frequency 2.5 x 10^15 / s , would be

Answer 1

Answer:

The threshold frequency is the frequency of light that carries enough energy to dislodge an electron from an atom. This energy is entirely consumed in the process (see References 5). Therefore, the electron gets no kinetic energy at the threshold frequency and it is not released from the atom.

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