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Dual Nature of Radiation question

2024 · 6 Apr · Shift 1 · Q70
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Dual Nature of Radiation question

2024 · 6 Apr · Shift 1 · Q70

JEE MainPhysicsDual Nature of RadiationMCQ+4 / −1
Which of the following phenomena does not explain by wave nature of light. A. reflection B. diffraction C. photoelectric effect D. interference E. polarization Choose the most appropriate answer from the options given below:
  1. A
    C only
  2. B
    B, D only
  3. C
    A, C only
  4. D
    E only
View written solutionFree

Correct answer: A

  1. We need the phenomenon that cannot be explained by the wave nature of light.

  2. Check each phenomenon:

    1. Reflection

      • Reflection can be explained using wave theory by applying boundary conditions on waves.
      • So, it is explained by wave nature.

    2. Diffraction

      • Diffraction is a hallmark of wave behavior.
      • So, it is explained by wave nature.

    3. Photoelectric effect

      • In photoelectric effect, electrons are emitted only when light has sufficient frequency.
      • This cannot be explained by classical wave theory.
      • It is explained by the particle nature of light, using photons with energy E=hνE = h\nuE=hν.
      • So, it is not explained by wave nature.

    4. Interference

      • Interference is a wave phenomenon.
      • So, it is explained by wave nature.

    5. Polarization

      • Polarization shows that light is a transverse wave.
      • It is explained within wave theory.
      • So, it is explained by wave nature.

  3. Therefore, among the given phenomena, only photoelectric effect is not explained by wave nature of light.

  4. Hence the correct option is:

    • A: C only

  5. Comparison with stored answer:

    • Stored correct answer = A
    • Our derived answer = A
    • They match.
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