All In One Science

Book: All In One Science

Chapter: 14. Source of Energy

Subject: Physics - Class 10th

Q. No. 4 of Challengers

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For a nuclear reactor, 48 kJ of energy is produced per minute. If the energy released per fission is 3.2 × 10-11 J, then the number of fission which would be taking place in a reactor per second is


Total energy released per minute = 48 kJ

= 48 × 103 J

Energy produced per second

= 0.8 × 103 J

Energy release per fission = 3.2 x 10-11 J


= 2.5x1013

Therefore number of fission per second is 2.5x1013.

So the correct answer is D.


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