Question

The nuclear charge $(Ze)$ is non-uniformly distributed within a nucleus of radius $R$. The charge density $\rho$ (r) [charge per unit volume] is dependent only on the radial distance $r$ from the centre of the nucleus as shown in figure The electric field is only along rhe radial direction.

The electric field at $r=R$ is

• A. independent of a
• B. directly proportional to a
• C. directly proportional to $a^2$
• D. inversely proportional to a

Answer 1

Answer: (A)

Correct answer is (a) independent of a