CUET · PHYSICS · PYQ PAPER 2025
A proton enters a uniform magnetic field of 0.2 T with speed v. It describes a semicircular path of radius 5 cm and comes out of the field. The final speed of the proton will be
- A 0.5 V
- B V
- C 4 V
- D 0.02 V
Answer & Solution
Correct Answer
(B) V
Step-by-step Solution
Detailed explanation
Magnetic force does no work on the proton. Speed of the proton remains constant. Final speed = \( v \)
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