Assertion. A metallic shield in the form of a hollow shell, can be built to block an electric field.
Reason. In a hollow spherical shell, the electric field inside is not zero at every point.

Options

A. if both Assertion and Reason are true and the Reason is 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 the Reason is false.
D. if both Assertion and Reason are false

Answer

a

Explanation

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