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Friday, 9 October

JEE Main 2025 · PhysicsMultiple choiceAssertion–reasonEasyConceptual

JEE Main 7 April 2025, Shift 2, Physics Q38

Question 38 of 75 in this shift, Physics question 13 of 25, Section A.

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 :
  1. (1)Both (A) and (R) are correct and (R) is the correct explanation of (A)Official answer
  2. (2)Both (A) and (R) are correct but (R) is not the correct explanation of (A)
  3. (3)(A) is correct but (R) is not correct
  4. (4)(A) is not correct but (R) is correct

Official answer

Option 1

NTA final key.

Chapter
Electric Charges and Fields
Topic
Conductors in Fields
Idea tested
Electrostatic Shielding

Same topic in other shifts

All Conductors in Fields questions
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  5. 8 Apr 2024, Shift 1 · Q45Two charged conducting spheres of radii aa and bb are connected to each other by a conducting wire. The ratio of charges of the two…EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.