JEE Main 2023 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 6 April 2023, Shift 2, Physics Q57

Question 57 of 90 in this shift, Physics question 27 of 30, Section B.

A proton with a kinetic energy of 2.0 eV moves into a region of uniform magnetic field of magnitude

\frac{\pi}{2}\times10^{-3}

T. The angle between the direction of magnetic field and velocity of proton is

60^\circ

. The pitch of the helical path taken by the proton is ________ cm. (Take, mass of proton =

1.6\times10^{-27}

kg and Charge on proton =

1.6\times10^{-19}

C).

Official answer

NTA final key.

Chapter: Moving Charges and Magnetism
Topic: Lorentz Force
Idea tested: Helical Motion and Pitch

Same idea in other shifts

Asked 7× in all

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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 108 of the 174 JEE Main shifts held from 2017 to 2026.