A metal is irradiated with light of frequency 3.2 x 1016 Hz. The ejected electron has kinetic energy
3/4" of the energy of absorbea pn
the energy of absorbed photon. The threshold frequency of the metal would be
(A) 1.6 x 1015 Hz
(C) 2.4 x 1025 Hz
(D) 2.4 x 1018 Hz
(B) 8 x 1015 Hz
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