Physics · Electrostatics
JEE Main 2025 — 7 April, Evening Shift — Question 51
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 :
- Option A:
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
- Option B:
(A) is correct but ( ) is not correct
- Option C:Correct
Both (A) and (R) are correct and (R) is the correct explanation of (A)
- Option D:
(A) is not correct but (R) is correct
Answer: C
Step-by-step solution
The outer body of air craft made with metal to provide electrostatic shield, such that electric
field inside craft remain zero for any charge on outer surface.
Answer key and solution verified before publishing.
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- Exam
- JEE Main 2025
- Subject
- Physics
- Chapter
- Electrostatics
- Topic
- Properties of Conductors and Redistribution of Charge