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Physics
Physics
Problem
Light of frequency
8
×
10
14
Hz
8\times10^{14}\,\text{Hz}
8
×
1
0
14
Hz
falls on a metal having threshold frequency
4
×
10
14
Hz
4\times10^{14}\,\text{Hz}
4
×
1
0
14
Hz
. If the light frequency is increased by
25
%
25\%
25%
, the percentage increase in the maximum kinetic energy of the emitted electrons is a)
25
%
25\%
25%
b)
33
%
33\%
33%
c)
50
%
50\%
50%
d)
56.25
%
56.25\%
56.25%
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