CUET · PHYSICS · PYQ PAPER 2023
A region has a uniform magnetic field in it. A proton enters the region with a velocity, making an angle of \( 45^\circ \) with the direction of the magnetic field. In this region the proton will move in :
- A straight line
- B circle
- C spiral
- D helix
Answer & Solution
Correct Answer
(D) helix
Step-by-step Solution
Detailed explanation
When a proton enters at an angle other than \(0^{\circ}\) or \(90^{\circ}\), its velocity splits into two parts: one parallel to the field (causing linear motion) and one perpendicular (causing circular motion). The combination of these two movements results in a helix. D) helix
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