JEE Main 2021 — Electrostatics Question with Solution
From: JEE Main 2021 (Online) 25th February Evening Shift
Question
Two small spheres each of mass 10 mg are suspended from a point by threads 0.5 m long. They are equally charged and repel each other to a distance of 0.20 m. The charge on each of the sphere is C. The value of 'a' will be ___________. [Given g = 10 ms2]
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Show full solutionCorrect answer: 20
Correct answer
20
Step-by-step explanation
T sin =
T cos = mg
tan =
q2 =
tan =
after comparison from the given equation a = 20
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This is a previous-year question from JEE Main 2021, covering the Electrostatics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.