JEE Mains · Physics · STD 12 - 11. Dual nature of radiation and matter
The graph shows variation of stopping potential \(V_o\) with the frequency \(\nu\) of the incident radiation for three photosensitive metals \(X_1\), \(X_2\) and \(X_3\). Which metal will give out electrons with greater kinetic energy, for the same wavelength of incident radiation?
- A \(X_1\)
- B \(X_2\)
- C \(X_3\)
- D All the metals will give out photo electrons with same kinetic energies.
Answer & Solution
Correct Answer
(A) \(X_1\)
Step-by-step Solution
Detailed explanation
From Einstein's photoelectric equation, the maximum kinetic energy of emitted photoelectrons is given by: \(K_{\text{max}} = \dfrac{hc}{\lambda} - \Phi\) where \(\lambda\) is the wavelength of incident radiation and \(\Phi\) is the work function of the metal. The work function…
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