CBSE Class 11-science Answered
the maximum kinetic energy of photoelectrons ejected from a metal when it is irradiated with a radiation of frequency 2 x 10^14 hertz is 6.63 x 10^-20. calculate the threshold energy.
Asked by | 03 May, 2013, 05:54: PM
Expert Answer
hv = W + KE
6.6 x 10 ^-34 X 2 X10 ^ 14 = W + 6.63 x 10^ 20
W = 6.57 x 10^20
Answered by | 06 May, 2013, 10:32: AM
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