Question bank

Physics

NEET PhysicsClass 12Motion in a magnetic fieldMediumSingle correct

A proton (m = 1.67 × 10⁻²⁷ kg, q = 1.6 × 10⁻¹⁹ C) enters a uniform magnetic field of 0.10 T with a speed of 4.0 × 10⁵ m s⁻¹, its velocity making 60° with the field. What is the pitch of its helical path?

More NEET Physics chapters

© 2026 Lumi (Aikolumi Software Pvt Ltd). Original questions written by Lumi. Free to view and practise on this site. Copying, republishing or reproducing these questions, options or solutions, in print or online, is not permitted.

Practising is step one. Knowing what to practise next is the hard part.

The Lumi app tracks every answer, finds the concepts you're losing marks on, and schedules your revision with FSRS before you forget.

Start learning free