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COMEDK2014PhysicsNuclear Physics

The energy equivalent of 1 ~g of a substance is

Options

  1. A4.5 10¹³ ~J
  2. B9 10¹⁶ ~J
  3. C9 10¹³ ~J
  4. D18 10¹³ ~J

Correct answer

C. 9 10¹³ ~J

Step-by-step solution

Given, m=1 ~g =10⁻³ ~kg According to Einstein's mass-energy equation, E=m c²=10⁻³ (3 10⁸ )²=9 10¹³ ~J

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