First slide

Photo Electric Effect

Question

According to Einstein's photoelectric equation, the graph between the kinetic energy of photoelectrons ejected and the frequency of incident radiation is

Moderate

A
B
C
D

Solution

According to Einstein equation
$hv = {hv}_{o} + K_{\max} \Rightarrow K_{\max} = hv - {hv}_{o}$
on comparing it with y = mx + c, it is clear to say that,
This is the equation of straight line having positive slope (h) and negative intercept ( ${hv}_{o}$ ) on KE axis.

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