question_answer

Maximum kinetic energy\[{{E}_{k}}\]of a photoelectron varies with the frequency\[v\]of the incident radiation as:

A)  

B)  

C)  

D)  

Correct Answer: A

Solution :

 From Einsteins theory, the maximum kinetic energy \[({{E}_{k}})\] of emitted photoelectron is \[{{E}_{k}}=hv-W\] ?(i) where,\[v\]is frequency and W is work function. Also equation of straight line, with slope m, and intercept c on \[x-\]axis given by \[y=mx+c\] ?(i) Comparing Eqs. (i) and (ii), we get