question_answer

If radius of the\[_{13}^{27}Al\] nucleus is estimated to be then the radius of nucleus be nearly                                           [AIEEE 2005]

A) 6fm

B) 8fm  

C) 4fm

D) 5fm

Correct Answer: A

Solution :

[a] The radius of the nucleus is given by

(where,constantand A = atomic mass)