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JEE MainPhysicsDual Nature of Matter

In the study of the photoelectric effect, consider the following experimental observations: A. Existence of a threshold frequency for the emission of photoelectrons. B. Almost instantaneous emission of photoelectrons. C. Proportionality of saturation photocurrent to the intensity of incident light. D. Maximum kinetic energy of photoelectrons being independent of the intensity of incident light. Which of these specifi

Options

  1. AA, B and D only
  2. BA, B, C and D
  3. CA and B only
  4. DC and D only

Correct answer

A. A, B and D only

Step-by-step solution

According to classical wave theory, the energy of a light wave depends on its intensity. Thus, a more intense beam should impart more kinetic energy to the photoelectrons, which contradicts observation D. Wave theory also suggests that light of any frequency, if sufficiently intense, should eventually provide enough energy to eject an electron, contradicting the existence of a threshold frequency (observation A). Furthermore, wave theory implies that energy is absorbed continuously over time, meaning there should b

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