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Tuesday, 01 September 2026
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A light energy \(E\) falls on a metal and the electrons with a maximum kinetic energy ...

A light energy \(E\) falls on a metal and the electrons with a maximum kinetic energy of \(0.2 \mathrm{eV}\) are \(C\) ejected. If the work function of the metal is \(0.3 \mathrm{eV}\), what is the value of \(E\) ?
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  • A \(0.10 \mathrm{eV}\)
  • B \(0.06 \mathrm{eV}\)
  • C \(0.50 \mathrm{eV}\)
  • D \(1.50 \mathrm{eV}\)
Correct Answer: Option C
Explanation:

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