NEET 2023 Phase 2 · PhysicsPhotocurrentPrevious Year Question
The maximum kinetic energy of the emitted photoelectrons in the photoelectric effect is independent of:
Answer: (D) Intensity of incident radiation. Answer: (d) Intensity of incident radiation Solution: Einstein's equation: Kmax = hν − φ.
- A.Frequency of incident radiation
- B.Wavelength of incident radiation
- C.Work function of material
- D.Intensity of incident radiation✓
Correct Answer
(D) Intensity of incident radiation
Solution & Explanation
Answer: (d) Intensity of incident radiation Solution: Einstein's equation: Kmax = hν − φ. Kmax depends on frequency (and hence wavelength) and the work function, but NOT on intensity. Intensity only changes the NUMBER of photoelectrons, not their maximum energy.
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