Assertion : A metallic shield in the form of a hollow shell may be built to block an electric field
Reason : In a hollow spherical shield, the electric field inside it is zero at every point

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If the assertion and reason both are false

Answer

A

Explanation

Charge is present only on the surface of a hollow spherical shield but charge is zero at every point inside the hollow sphere. Hence, the metallic shield in form of hollow shell may be built to block an electric field.