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Saturday, 31 October

JEE Main 2023 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 10 April 2023, Shift 2, Physics Q31

Question 31 of 90 in this shift, Physics question 1 of 30, Section A.

The distance between two plates of a capacitor is d and its capacitance is C1C_1, when air is the medium between the plates. If a metal sheet of thickness 2d3\frac{2d}{3} and of the same area as plate is introduced between the plates, the capacitance of the capacitor becomes C2C_2. The ratio C2C1\frac{C_2}{C_1} is
  1. (1)1:11:1
  2. (2)2:12:1
  3. (3)3:13:1Official answer
  4. (4)4:14:1

Official answer

Option 3

NTA final key.

Chapter
Electrostatic Potential and Capacitance
Topic
Parallel Plate Capacitors
Idea tested
Inserted Conducting Slab

Same idea in other shifts

Asked 2× in all
  1. 25 Jun 2022, Shift 2 · Q38Two metallic plates form a parallel plate capacitor. The distance between the plates is ‘dd’. A metal sheet of thickness d2\frac{d}{2}…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 108 of the 174 JEE Main shifts held from 2017 to 2026.