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Dual Nature of Radiation question

2016 · Shift 0 · Q40
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Dual Nature of Radiation question

2016 · Shift 0 · Q40

JEE MainPhysicsDual Nature of RadiationMCQ+4 / −1
Radiation of wavelength λ,\lambda ,λ, is incident on a photocell. The fastest emitted electron has speed v.v.v. If the wavelength is changed to 3λ4,{{3\lambda } \over 4},43λ​, the speed of the fastest emitted electron will be:
  1. A
    =v(43)12= v{\left( {{4 \over 3}} \right)^{{1 \over 2}}}=v(34​)21​
  2. B
    =v(34)12= v{\left( {{3 \over 4}} \right)^{{1 \over 2}}}=v(43​)21​
  3. C
    >v(43)12\gt v{\left( {{4 \over 3}} \right)^{{1 \over 2}}}>v(34​)21​
  4. D
    <v(43)12\lt v{\left( {{4 \over 3}} \right)^{{1 \over 2}}}<v(34​)21​
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