Department of Pre-University Education, Karnataka course PUC Karnataka Science Class 12
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A Uranium Reactor Develops Thermal Energy at a Rate of 300 Mw. Calculate the Amount of 235u Being Consumed Every Second. Average Released per Fission is 200 Mev. - Physics

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Question

A uranium reactor develops thermal energy at a rate of 300 MW. Calculate the amount of 235U being consumed every second. Average released per fission is 200 MeV.

Solution

Given:
Rate of development of thermal energy = 300 MW
Average energy released per fission = 200 MeV
Let N be the number of atoms disintegrating per second.
Then, the total energy emitted per second will be

`N xx 200 xx 10^6 xx 1.6 xx 10^-19` = Power

`N xx 200 xx 10^6 xx 1.6 xx 10^-19 = 300 xx 10^6` atoms

⇒ `N = 3/(2 xx 1.6) xx 10^19 = 3/3.2 xx 10^19` atoms

6.023 × 1023 atoms = 238 gm of U235

`3/3.2 xx 10^19` atoms will present in `(238 xx 3 xx 10^19)/(6 xx 10^23 xx 3.2) = 3.7` mg

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Solution A Uranium Reactor Develops Thermal Energy at a Rate of 300 Mw. Calculate the Amount of 235u Being Consumed Every Second. Average Released per Fission is 200 Mev. Concept: Nuclear Energy - Fission.
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