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Physics · JEE Main, Olympiad (NSEP)

Modern Physics

5 practice questions with a worked solution for each. Tap an option to see instantly if you are right.

4MCQ1Numerical

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1An electron is accelerated through a potential difference of $V = 100\,\text{V}$ . The de-Broglie wavelength associated with the electron is approximately:JEE Main/MCQ/Medium
2The half life of a radioactive sample is $20$ days. The percentage of initial nuclei remaining undecayed after $60$ days is:JEE Main/Numerical/Medium
3A particle of rest mass $m_0$ moves with speed $v = 0.8c$ . The relativistic kinetic energy of the particle is equal to:Olympiad (NSEP)/MCQ/Hard
4In the Compton scattering of an X-ray photon of wavelength $\lambda$ by a free stationary electron, the maximum fractional increase in wavelength $\frac{\Delta\lambda}{\lambda}$ occurs at scattering angle $\theta = 180^\circ$ and equals:Olympiad (NSEP)/MCQ/Hard
5The de-Broglie wavelength of a thermal neutron at temperature $T$ is inversely proportional to:JEE Main/MCQ/Medium

JEE Main question paper PDF

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JEE Main 2025 Apr 2 Shift 1 question paper

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Modern Physics

JEE Main question paper PDF

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