NEET 2001 Physics question

Energy is released in nuclear fission is due to

(1)Few mass is converted into energy
(2)Total binding energy of fragements is more than the B.E. of parantel elementCorrect
(3)Total B.E. of fragements is less than the B.E. of parantel element
(4)Total B.E. of fragements is equals to the B.E. of parantal element is

Answer: (2)

Solution

In fission a heavy nucleus (binding energy per nucleon about 7.6 MeV) splits into medium-mass fragments (binding energy per nucleon about 8.5 MeV). The fragments are more tightly bound, so the total binding energy of the fragments is greater than that of the parent nucleus; the difference is released as

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Question ID VK-088784