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Solution


Q.

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R                   [2023]

Assertion A: The binding energy per nucleon is practically independent of the atomic number for nuclei of mass number in the range 30 to 170.

Reason R: Nuclear force is short ranged.

In the light of the above statements, choose the correct answer from the options given below:
1 Both A and R are true but R is NOT the correct explanation of A  
2 A is true but R is false  
3 A is false but R is true  
4 Both A and R are true and R is the correct explanation of A  

Ans.

(4)

Binding energy per nucleon is almost same for nuclei of mass number ranging 30 to 170.