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Tuesday, 18 August 2026
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Physics Past Questions and Answers

Topic: Elementary Modern Physics

Jamb Physics Questions - Elementary Modern Physics

Question 46:
An electron in a hydrogen atom makes a transition from the ground level to the third level. If the energy at the ground level,calculate the energy at the third level.
[h = 6.6 x 10-34Js; f = 1015Hz]
  • A 1.41eV
  • B 1.71eV
  • C 1.61eV
  • D 1.51eV
View Answer & Explanation
Question 47:
Which of the following is not an electromagnetic radiation?
  • A X - ray
  • B Radio waves
  • C Sunlight
  • D Sound waves
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Question 48:
An element and its isotope only differ in the number of
  • A Protons
  • B Electrons
  • C Ions
  • D Neutrons
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Question 49:
It is known that a neutron exists in a light atomic nucleus
Which of the following also exists in the nucleus?
  • A An electron
  • B A β - particle
  • C β - particle
  • D Proton
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Question 50:
One of the features of the fission process is that
  • A It leads to chain reaction
  • B Its products are not radioactive
  • C Neutrons are not released
  • D The of the masses of the reactants equals the sum of the masses of the products
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