JEE Main 2025 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 4 April 2025, Shift 2, Physics Q49

Question 49 of 75 in this shift, Physics question 24 of 25, Section B.

A particle of charge 1.6

\mu

C and mass 16

\mu

g is present in a strong magnetic field of 6.28 T. The particle is then fired perpendicular to magnetic field. The time required for the particle to return to original location for the first time is __________ s. (

\pi=3.14

)

Official answer

NTA final key.

Chapter: Moving Charges and Magnetism
Topic: Lorentz Force
Idea tested: Cyclotron Frequency and Energy

Same topic in other shifts

All Lorentz Force questions

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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.