The kinetic energy of an electron emitted when a radiation of frequenc – InterviewSolution

1.	The kinetic energy of an electron emitted when a radiation of frequency 1.0×1015 s−1 hits the metal is 2×10−19 J. Calculate the threshold frequency of the metal.
Answer» The kinetic energy of an electron emitted when a radiation of frequency $1.0 \times 10^{15} s^{- 1}$ hits the metal is $2 \times 10^{- 19} J$ . Calculate the threshold frequency of the metal.

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