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NEET2020PhysicsNuclear PhysicsActual

The energy equivalent of 0.5   g of a substance is:

Options

  1. A4.5 × 10 13   J
  2. B1.5 × 10 13   J
  3. C0.5 × 10 13   J
  4. D4.5 × 10 16   J

Correct answer

A. 4.5 × 10 13   J

Step-by-step solution

Einstein's theory of special relativity gives the relation between mass and energy. Energy, E = m c 2 , where c is the speed of light. E = 0 . 5 × 10 − 3 × 9 × 10 16 ⇒ E = 4 . 5 × 10 13   J

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