Target Exam

CUET

Subject

Physics

Chapter

Moving Charges and Magnetism

Question:

A proton enters a uniform magnetic field of 0.2 T with speed v. It describes a semi-circular path of radius 5 cm and comes out of the field. The final speed of the proton will be

Options:

0.5 v

v

4 v

0.02 v

Correct Answer:

v

Explanation:

The correct answer is Option (2) → v