Nuclear and Particle Physics

JKPSC Assistant Professor (Physics) · Physics · 69 practice questions with answers and explanations: 4 Easy, 65 Medium, 0 Hard.

Sample questions

Sample Easy question 1

The leptons include the electron, the muon and the:

  1. Kaon
  2. Tau
  3. Pion
  4. Lambda
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Answer: B. Each has an associated neutrino.

Sample Easy question 2

The half-life and decay constant are related by:

  1. T½ = ln 2 / λ
  2. T½ = λ²
  3. T½ = 1/λ
  4. T½ = λ ln 2
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Answer: A. T½ = 0.693/λ.

Sample Easy question 3

The particle that mediates the electromagnetic force is the:

  1. Photon
  2. Gluon
  3. W boson
  4. Graviton
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Answer: A. A massless boson.

Sample Medium question 4

The neutrino was predicted by:

  1. Fermi
  2. Cowan
  3. Pauli
  4. Reines
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Answer: C. It was detected in 1956.

Sample Medium question 5

Fermi's theory of beta decay is a theory of the:

  1. Electromagnetic interaction
  2. Weak interaction
  3. Gravity
  4. Strong interaction
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Answer: B. It was proposed in 1934.

Sample Medium question 6

In beta-minus decay, a neutron changes into:

  1. A proton only
  2. An electron only
  3. A proton, electron and antineutrino
  4. A neutrino only
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Answer: C. The atomic number rises by 1.

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