Learn

Friday, 9 October

JEE Main 2022 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 28 July 2022, Shift 1, Physics Q40

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

Two capacitors, each having capacitance 40 μ\muF are connected in series. The space between one of the capacitors is filled with dielectric material of dielectric constant K such that the equivalence capacitance of the system became 24 μ\muF. The value of K will be :
  1. (1)1.5Official answer
  2. (2)2.5
  3. (3)1.2
  4. (4)3

Official answer

Option 1

NTA final key (2022 Session 2).

Chapter
Electrostatic Potential and Capacitance
Topic
Dielectrics
Idea tested
Capacitance with Full Slab

Same idea in other shifts

Asked 2× in all
  1. 4 Apr 2025, Shift 2 · Q35Three parallel plate capacitors C1C_1, C2C_2 and C3C_3 each of capacitance 5 μ\muF are connected as shown in figure. The effective…EasySingle correctHas a figure

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.