Photoelectric Effect Dual Nature of Radiation and Matter Class 12th Physics

Two stream of photons, possessing energies equal to twice and ten times the work function of metal are incident on the metal surface successively. The value of ratio of maximum velocities of the photoelectrons emitted in the two respective cases is x : y. The value of x is………

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Alok Kumar Singh | Contributor-Level 10

4 months ago

Case I :- $2 ? - ? = \frac{1}{2} m v_{1}^{2} . . . . . . . . (i)$

Case II :- $10 ? - ? = \frac{1}{2} m v_{2}^{2} . . . . . . . . (i i)$

$\Rightarrow \frac{1}{9} = \frac{v_{1}^{2}}{v_{2}^{2}}$

$\Rightarrow v_{1} : v_{2} = 1 : 3$

->x = 1

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Physics Dual Nature of Radiation and Matter 2021

Physics Dual Nature of Radiation and Matter 2021

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