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Dual Nature of Radiation question

2020 · 8 Jan · Shift 1 · Q41
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Dual Nature of Radiation question

2020 · 8 Jan · Shift 1 · Q41

JEE MainPhysicsDual Nature of RadiationMCQ+4 / −1
When photon of energy 4.0 eV strikes the surface of a metal A, the ejected photoelectrons have maximum kinetic energy TA eV end de-Broglie wavelength λA\lambda _AλA​. The maximum kinetic energy of photoelectrons liberated from another metal B by photon of energy 4.50 eV is TB = (TA – 1.5) eV. If the de-Broglie wavelength of these photoelectrons λB\lambda _BλB​ = 2 λA\lambda _AλA​, then the work function of metal B is :
  1. A
    1.5eV
  2. B
    4eV
  3. C
    2eV
  4. D
    3eV
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