JEE Main 2025 Physics question
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The outer body of an air craft is made of metal which protects persons sitting inside from lightning-strikes. Reason (R) : The electric field inside the cavity enclosed by a conductor is zero. In the light of the above statements, choose the most appropriate answer from the options given below :
Answer: (3)
Solution
Metal body creates electrostatic shielding making field inside zero, protecting occupants; this explains the assertion.