If the` Q` value of an endothermic reaction is `11.32 MeV`, then the minimum energy of the reactant nuclei to carry out the reaction is (in laboratotry frame of reference)

Options

A. `11.32 MeV`
B. less than `11.32 MeV`
C. greater than `11.32 MeV`
D. Data is insufficeint

Answer

c

Explanation

The minimum energy needed to carry out ab endothermic reaction is greater than the `Q` value of the reaction. This is because to conserve the momentum some extra energy has to be provided.
`KE_(min) =((1 +m)/(M)) xx |Q|`, where m is the mass of the incident particle and `M` is the mass of target.