MHT CET · Physics · Dual Nature of Matter
The variation of stopping potential for metals A, B, \(C\) and D with frequency of incident radiation is as shown in the figure. For which metal, stopping potential is higher for lower values of threshold frequency \(\left(v_{o}\right)\) ?
[The frequency of incident radiation, ' \(v^{\prime}\) is same.]
- A C
- B \(\mathrm{D}\)
- C \(\mathrm{A}\)
- D B
Answer & Solution
Correct Answer
(C) \(\mathrm{A}\)
Step-by-step Solution
Detailed explanation
(B)
The electrons will have greater kinetic energy for the metal which have smaller threshold frequency (and hence work function). Hence stopping potential will be higher for them. Hence metal A will have higher stopping potential.
The electrons will have greater kinetic energy for the metal which have smaller threshold frequency (and hence work function). Hence stopping potential will be higher for them. Hence metal A will have higher stopping potential.
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