MHT CET · Physics · Dual Nature of Matter
If the frequency of incident light falling on a metallic surface is doubled, maximum kinetic energy of emitted photoelectrons
- A increases to slightly more than double.
- B remains the same.
- C becomes twice.
- D decreases to slightly more than double.
Answer & Solution
Correct Answer
(A) increases to slightly more than double.
Step-by-step Solution
Detailed explanation
\( KE_{max} = hf - \phi \) If \( f' = 2f \), then \( KE'_{max} = h(2f) - \phi = 2hf - \phi = 2(KE_{max} + \phi) - \phi = 2KE_{max} + \phi \)
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