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Question 30471
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Work, Power and Energy: JEE — Mass-Energy Equivalence MCQ

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JEE — Mass-Energy EquivalenceHardQuestion 30471

Question

In a nuclear reaction, 0.1 g of mass is converted to energy. Energy released is: (c = 3×10⁸ m/s)
  1. A
    9×10¹² J
    Correct
  2. B
    3×10¹⁵ J
  3. C
    9×10¹³ J
  4. D
    9×10¹¹ J

Correct answer

9×10¹² J

Explanation

E = mc² = 0.1×10⁻³ × (3×10⁸)² = 10⁻⁴ × 9×10¹⁶ = 9×10¹² J.

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