Photoelectric Effect – JEE Advanced Previous Year Questions with Solutions

JEE Advanced Previous Year Questions of Physics with Solutions are available at eSaral. Practicing JEE Advanced Previous Year Papers Questions of Physics will help the JEE aspirants in realizing the question pattern as well as help in analyzing weak & strong areas.

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Previous Years JEE Advanced Questions

Paragraph for Question Nos. 1 to 3

When a particle is restricted to move along x-axis between x = 0 and x = a, where a is of nanometer dimension, its energy can take only certain specific values. The allowed energies of the particle moving in such a restricted region, correspond to the formation of standing waves with nodes at its ends x = 0 and x = a. The wavelength of this standing wave is related to the linear momentum p of the particle according to the de Broglie relation. The energy of the particle of mass m is related to its linear momentum as \mathrm{E}=\frac{\mathrm{p}^{2}}{2 \mathrm{m}}. Thus, the energy of the particle can be denoted by a quantum number ‘n’ taking values 1,2,3, … (n = l, called the ground state) corresponding to the number of loops in the standing wave. Use the model described above to answer the following three questions for a particle moving in the line x = 0 to x = a.

Take h = 6.6 \times 10^{-34} \mathrm{Js} \text { and } \mathrm{e}=1.6 \times 10^{-19} \mathrm{C}.


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