AP EAMCET · PHYSICS · Dual Nature of Matter
The retarding potential necessary to stop the emission of photoelectrons, when a target material of work function \(1.24 \mathrm{eV}\) is irradiated with light of wavelength \(4.36 \times 10^{-7} \mathrm{~m}\) is
- A \(4.08 \mathrm{eV}\)
- B \(2.84 \mathrm{eV}\)
- C \(1.60 \mathrm{eV}\)
- D \(0.36 \mathrm{eV}\)
Answer & Solution
Correct Answer
(C) \(1.60 \mathrm{eV}\)
Step-by-step Solution
Detailed explanation
Given, work function, \(\phi_0=1.24 \mathrm{eV}\) \(=1.24 \times 1.6 \times 10^{-19} \mathrm{~J}\) Wavelength, \(\lambda=4.36 \times 10^{-7} \mathrm{~m}\) According to Einstein's photoelectric equation,…
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