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Atoms — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsAtoms1 Mark
MCQ
The angular momentum of the α−particles which are scattered through large angles by the heavier nuclei, is conserved because:
  • A
    Of the nature of repulsive forces
  • B
    The kinetic energy is conserved
  • C
    The potential energy is conserved
  • D
    There is no external torque
✓

Answer

  1. There is no external torque

Explanation:

The angular momentum of $\alpha$ particles is conserved because there is no external torque.

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