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in a nuclear fission process, the mass defect was 1.2 x 10-5kg. Calculate the energy...

Physics
WAEC 2015
in a nuclear fission process, the mass defect was 1.2 x 10-5kg. Calculate the energy released. [speed of the light in vacuum = c = 3.0 x 108ms-1]
  • A. 1.08 x 1011J
  • B. 5.20 x 1011J
  • C. 1.08 x 1012J
  • D. 2.50 x 1013J
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Correct Answer: Option C
Explanation
E - Mec2

E = 1.2 x 10-5 x (3 x 108)2

E = 1.08 x 1012J
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