Question

The fraction of volume occupied by the nucleus with respect to the total volume of an atom is

• A. $10^{-10}$
• B. $10^{-5}$
• C. $10^{-30}$
• D. $10^{-15}$

Answer 1

Answer: (D)

Volume fraction $\frac{\text{ Volume of nucleus }}{\text{ Total vol. of atom }}$

$=\frac{(4/3)\pi {\left(10^{-13}\right)}^3}{(4/3)\pi {\left(10^{-8}\right)}^3}=10^{-15}$