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COMEDK2023PhysicsDual Nature of Matter

Let K₁ be the maximum kinetic energy of photoelectrons emitted by light of wavelength ₁ and K₂ corresponding to wavelength ₂ . If ₁=2 ₂ , then

Options

  1. A2 K₁=K₂
  2. BK₁=2 K₂
  3. CK₁ < K₂ / 2
  4. DK₁>2 K₂

Correct answer

C. K₁ < K₂ / 2

Step-by-step solution

Substituting ₁=2 ₂ in Eq. (i), we get aligned & K₁= h c 2 ₂ -W & K₁= 1 2 ( h c ₂ )-W= 1 2 (K₂+W )-W & K₁= K₂ 2 - W 2 & K₁ < K₂ 2 aligned

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