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Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 26 June 2022, Shift 2, Physics Q40

Question 40 of 90 in this shift, Physics question 10 of 30, Section A.

Sixty four conducting drops each of radius 0.02 m and each carrying a charge of 5 μ\muC are combined to form a bigger drop. The ratio of surface density of bigger drop to the smaller drop will be :
  1. (1)1:4
  2. (2)4:1Official answer
  3. (3)1:8
  4. (4)8:1

Official answer

Option 2

NTA final key.

Chapter
Electric Charges and Fields
Topic
Conductors in Fields
Idea tested
Surface Charge Distribution

Same idea in other shifts

Asked 2× in all
  1. 4 Apr 2026, Shift 2 · Q38Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: In electrostatics, a…MediumAssertion–reason

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 108 of the 174 JEE Main shifts held from 2017 to 2026.