MCQ

Let V and E be the gravitational potential and gravitational field at a distance r from the centre of a uniform spherical shell. Consider the following two statements :

(A) The plot of V against r is discontinuous.

(B) The plot of E against r is discontinuous.

#### Options

Both A and B are correct.

A is correct but B is wrong.

B is correct but A is wrong.

Both A and B are wrong.

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#### Solution

B is correct but A is wrong.

The plot of E against r is discontinuous as gravitational field inside the spherical shell is zero (r < R). The plot of V against r is a continuous curve for a uniform spherical shell.

Concept: Universal Law of Gravitation

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