Modern Physics: Atomic & Nuclear
Test your JEE Main modern physics with questions on atomic structure, the photoelectric effect, and nuclear decay.
Fourteen questions cover Bohr’s hydrogen model, Einstein’s photoelectric equation, alpha/beta/gamma decay, half-life, and nuclear fission and fusion.
A focused check on the atomic and nuclear physics that closes out JEE Main’s physics syllabus.
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Sample questions3 of 14 shown
Q1
According to Bohr's model of the hydrogen atom, the radius of the first Bohr orbit (n=1) is known as the Bohr radius (a₀). Which of the following best describes its physical significance?
Q2
The energy of an electron in the nth Bohr orbit of hydrogen is given by Eₙ = -13.6 eV / n². An electron transitions from n=3 to n=1. What is the nature and approximate magnitude of the emitted photon?
Q3
In the photoelectric effect, stopping potential V₀ is applied to stop the most energetic photoelectrons. If the stopping potential increases with increasing frequency of incident light, what does this reveal about the relationship between photon energy and maximum kinetic energy of emitted electrons?
What This Quiz Covers
- Bohr’s model of the hydrogen atom
- The photoelectric effect
- Characteristic X-rays
- Alpha, beta, and gamma decay
- Radioactive half-life
- Nuclear fission and fusion
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