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Question: Light of frequency \(8 \times 10 ^ { 15 } \mathrm {~Hz}\) is incident on a substance of photoelectri...

Light of frequency 8×1015 Hz8 \times 10 ^ { 15 } \mathrm {~Hz} is incident on a substance of photoelectric work function 6.125 eV. The maximum kinetic energy of the emitted photoelectrons is

A

17 Ev

B

22 eV

C

27eV

D

37eV

Answer

27eV

Explanation

Solution

Energy of incident photon

=26.87eV≈27eV= 26.87 \mathrm { eV } \approx 27 \mathrm { eV }