Consider the following statements and state whether true( T ) or false( F ): (i) Nuclear fission is normally followed by emission of β - - particles. (ii) Emission of α - particle is normally followed by emission of γ - rays (iii) As the mass number A increases, the binding energy per nucleon in a nucleus also increases Choose the correct order from the options given below.

Question

Consider the following statements and state whether true( T ) or false( F ): (i) Nuclear fission is normally followed by emission of β - - particles. (ii) Emission of α - particle is normally followed by emission of γ - rays (iii) As the mass number A increases, the binding energy per nucleon in a nucleus also increases Choose the correct order from the options given below., T T T, T T F, F T T, T F T

MARKS App · Accepted Answer

(i) Nuclear fission results in fragments whose neutron/proton ratio is higher than the required value (N/P ratios is greater for heavier nuclei). To reduce the N/P ratio these fragments undergo β - decays in which a neutron is converted into a proton. (ii) Some of the energy generated in α - emission goes into nuclear excitation. The excited nucleus returns to ground state by γ - emission. (iii) the binding energy per nucleon in a nucleus varies in a way that depends on the actual value of A

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