JEE Main 2025PhysicsElectrostaticsHardMCQ

JEE Main 2025Electrostatics Question with Solution

JEE Main 2025 (28 Jan Shift 1)

Question

A particle of mass ' ' and charge ' ' is fastened to one end ' ' of a massless string having equilibrium length , whose other end is fixed at point ' '. The whole system is placed on a frictionless horizontal plane and is initially at rest. If uniform electric field is switched on along the direction as shown in figure, then the speed of the particle when it crosses the x -axis is

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Show full solutionCorrect option: B
Correct answer
B

Step-by-step explanation


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About this question

This is a previous-year question from JEE Main 2025, 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.