NEET UG 2019 · Physics · Question 3
NEET 2019 Physics, question 3
Question 3 of the NEET 2019 paper (code P1) is a Physics question from Moving Charges and Magnetism. Its idea, Charged Particle in a Magnetic Field, was asked twice, in 2019 and 2025, across NEET 2017–2026. The NTA final answer key gives option 1.
Updated 2026-10-08
Q3 · Physics
Ionized hydrogen atoms and α-particles with same momenta enters perpendicular to a constant magnetic field, B. The ratio of their radii of their paths will be :
- 12 : 1Official answer
- 21 : 2
- 34 : 1
- 41 : 4
Official answer: option 1 · NTA final answer key
Same idea
Charged Particle in a Magnetic Field, in other papers
NEET asked this idea twice, in 2019 and 2025. The other question below.
- 2025 Q18A model for quantized motion of an electron in a uniform magnetic field states that the flux passing through the orbit of the electron…One-line MCQ · Hard
Charged Particle in a Magnetic Field: every question and how it was framed
The chapter
Moving Charges and Magnetism in ten years of NEET
22 questions from 2017–2026, asked in 10 of 10 papers, about 2.1 a paper. Magnetic Force on Charges and Currents alone had 10.