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MHT CET202613 April 2026Morning ShiftPhysicsDual Nature of MatterActual

Which one of the four graphs showing lines P, Q, R and S between maximum kinetic energy (E) and intensity of incident radiation (I) is correct?

Options

  1. AP
  2. BQ
  3. CR
  4. DS

Correct answer

A. P

Step-by-step solution

According to Einstein's photoelectric equation, the maximum kinetic energy of emitted photoelectrons is given by: E = h - where h is Planck's constant, is the frequency of incident radiation, and is the work function of the material. From this equation, it is clear that the maximum kinetic energy ( E ) depends only on the frequency of the incident radiation and the nature of the material. It is completely independent of the intensity ( I ) of the incident radiation, provided the frequency is above the threshold fre

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