All India Engineering / Architecture Entrance Examination (AIEEE)

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AIEEE 2010 Physics

Directions: Questions number 40-41 are based on the following paragraph.

A nucleus of mass M + m is at rest and decays into two daughter nuclei of equal mass each. Speed of light is c.

Q. 24. The binding energy per nucleon for the parent nucleus is E1 and that for the daughter nuclei is E2. Then

1. E2 = 2E1
2. E1 > E2
3. E2 > E1
4. E1 = 2E2

Sol:

Since, mass of daughter nuclei < Mass of parent nucleus

 energy is released B.E

per nucleon for products is greater than B.E. per nucleon for the parent nucleus

Answer : (3)