NEET Physics Nuclei Questions Solved


The mass of an α-particle is 
(a) Less than the sum of masses of two protons and two neutrons
(b) Equal to mass of four protons
(c) Equal to mass of four neutrons .
(d) Equal to sum of masses of two protons and two neutrons

(a) This is due to mass defect because a part of mass is used in keeping the neutrons and protons bound as α-particle.

Difficulty Level:

  • 60%
  • 23%
  • 14%
  • 5%