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In an atomic explosion, enormous energy is released which is due to

  • A.Conversion of chemical energy into heat energy
  • B.Conversion of mechanical energy into nuclear energy
  • C.Conversion of mass into energy
  • D.Conversion of neutrons into protons

Answer: C

The energy of an atomic explosion comes from the conversion of mass into energy.

The fragments of a fissioned uranium nucleus weigh slightly less than the original, and the missing mass appears as energy according to Einstein's relation:

\[ E = mc^2 \]

Because \( c^2 \) is so large, a gram of mass yields about 9 × 1013 joules.

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