JEE Main 2019 · 8 Apr · Shift II

JEE Main 2019 Chemistry question on Atomic Structure

If pp is the momentum of the fastest electron ejected from a metal surface after the irradiation of light having wavelength λ\lambda, then for 1.5 p1.5\, p momentum of the photoelectron, the wavelength of the light should be

(Assume kinetic energy of ejected photoelectron to be very high in comparison to work function)
  1. A.
    49λ\dfrac{4}{9}\lambda
  2. B.
    34λ\dfrac{3}{4}\lambda
  3. C.
    23λ\dfrac{2}{3}\lambda
  4. D.
    12λ\dfrac{1}{2}\lambda
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Correct option: A

[JEE Main 2019 · 8 Apr · Shift II]

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