Light of frequency falls on a metal having threshold frequency

PHYSICS · Single correct · CBSE · Physics · Dual Nature of Radiation and Matter · Dual Nature of Radiation and Matter

Problem

Light of frequency

8\times10^{14}\,\text{Hz}

falls on a metal having threshold frequency

4\times10^{14}\,\text{Hz}

. If the light frequency is increased by

25\%

, the percentage increase in the maximum kinetic energy of the emitted electrons is (a)

25\%

(b)

33\%

(c)

50\%

(d)

56.25\%