Question

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : The density of the copper $\left({ }_{29}^{64} \mathrm{Cu}\right)$ nucleus is greater than that of the carbon $\left({ }_{6}^{12} \mathrm{C}\right)$ nucleus.

Reason (R) : The nucleus of mass number $A$ has a radius proportional to $A^{1 / 3}$ .

In the light of the above statements, choose the most appropriate answer from the options given below.

Accepted Answer

(A) is not correct but (R) is correct

Answer

Both (A) and (R) are correct and (R) is the correct explanation of (A)

Answer

Both (A) and (R) are correct and (R) is not the correct explanation of (A)

Answer

(A) is correct but (R) is not correct

JEE Main 2025 — 7 April, Evening Shift — Question 60

Answer: B

Step-by-step solution

Practise Nuclear Physics