JEE Main 2022 · 28 Jul · Shift 2 · Physics Q17

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PhysicsSingle correct+4 / -1Question 17 of 90

Two streams of photons, possessing energies equal to five and ten times the work function of metal are incident on the metal surface successively. The ratio of maximum velocities of the photoelectron emitted, in the two cases respectively, will be

1 : 2

1 : 3

2 : 3

3 : 2

Answer and worked solution

Official answer: C

Kinetic energies $4\phi$ and $9\phi$ , so speeds go as $2:3$ .

(C)

Topics:Photoelectric effect

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JEE Main 2022 · 28 Jul · Shift 2, Physics question 17