JEE Main 2024 · PhysicsNumerical answerNumerical valueHardMulti-step

JEE Main 30 January 2024, Shift 2, Physics Q55

Question 55 of 90 in this shift, Physics question 25 of 30, Section B.

Two identical charged spheres are suspended by strings of equal lengths. The strings make an angle of

37^\circ

with each other. When suspended in a liquid of density

0.7\ g/cm^3

, the angle remains same. If density of material of the sphere is

1.4\ g/cm^3

, the dielectric constant of the liquid is ________

\left(\tan 37^\circ = \frac{3}{4}\right)

Official answer

NTA final key.

Chapter: Electric Charges and Fields
Topic: Coulomb's Law
Idea tested: Suspended Charges Immersed in Liquid

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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.