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Assertion (A) : When U-235 isotope is bo...

Assertion (A) : When U-235 isotope is bombarded by slow neutrons , nuclear fission takes place with a release of about 200 Me V of energy .
Reason (R) : The disintegration energy is fission event first appears as the kinetic energy of fragments and neutrons but eventually it is transferred to the surrounding matter appearing as heat .

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In nuclear fission energy is released on account of higher binding energy of fragments than binding energy of uranium nucleus .
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