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Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 24 June 2022, Shift 2, Physics Q34

Question 34 of 90 in this shift, Physics question 4 of 30, Section A.

Two identical charged particles each having a mass 10 g and charge 2.0×10−7C2.0 \times 10^{-7}C are placed on a horizontal table with a separation of L between them such that they stay in limited equilibrium. If the coefficient of friction between each particle and the table is 0.25, find the value of L. [Use g = 10ms−2^{-2}]
  1. (1)12 cmOfficial answer
  2. (2)10 cm
  3. (3)8 cm
  4. (4)5 cm

Official answer

Option 1

NTA final key.

Chapter
Electric Charges and Fields
Topic
Coulomb's Law
Idea tested
Charge Equilibrium Analysis

Same idea in other shifts

Asked 2× in all
  1. 11 Apr 2023, Shift 1 · Q55As shown in the figure, a configuration of two equal point charges (q0=+2μq_0 = +2\mu C) is placed on an inclined plane. Mass of each point…MediumNumerical valueHas 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 108 of the 174 JEE Main shifts held from 2017 to 2026.