COMEDK · Physics · 27. Dual Nature of Matter
The graph of kinetic energy of photoelectron versus frequency of incident radiation is shown for two metals \(M\) and \(N\). We may definitely conclude
- A work function of \(M>\) work function of \(N\)
- B work function of \(M < \) work function of \(N\)
- C work function of \(M=\) work function of \(N\)
- D at the threshold frequency of \(M\) the kinetic energy of the photoelectron emitted by \(M\) is more than that emitted by \(N\)
Answer & Solution
Correct Answer
(A) work function of \(M>\) work function of \(N\)
Step-by-step Solution
Detailed explanation
Work function of a metal, \[ \begin{aligned} W &=h v_{0} \\ \text { where, } h &=\text { Planck's constant } \\ v_{0} &=\text { threshold frequency. } \end{aligned} \] As, the threshold frequency of metal \(M\) is more than that of metal \(N\), so work function of \(M\) is more…
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