TS EAMCET · Physics · Dual Nature of Matter
A photon of energy \(4 \mathrm{eV}\) imparts all its energy to an electron that leaves a metal surface with \(1.1 \mathrm{eV}\) of kinetic energy. The work function of the metal is
- A \(2.9 \mathrm{eV}\)
- B \(5.1 \mathrm{eV}\)
- C \(3.64 \mathrm{eV}\)
- D \(4.4 \mathrm{eV}\)
Answer & Solution
Correct Answer
(A) \(2.9 \mathrm{eV}\)
Step-by-step Solution
Detailed explanation
Work function = Incident energy-K \(\mathrm{E}\) of electron \(=4 \mathrm{eV}-1.1 \mathrm{eV}=2.9 \mathrm{eV}\)
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