A collimated beam of protons is travelling with a constant velocity along X-axis. There is a…
A collimated beam of protons is travelling with a constant velocity along X-axis. There is a current carrying solenoid whose axis is also X-axis. If the beam now enters the solenoid along its axis, it will:
- (a)describe a circular path.
- (b)get deflected along Z-axis.
- (c)get deflected along Y-axis.
- (d)continue to travel undeflected.
Answer
Answer
AIWritten by AI - it can contain mistakes.
Correct option: (d)
Answer: (d) continue to travel undeflected.
Inside the solenoid, the magnetic field is directed along its axis (X-axis). Since the velocity of the protons is parallel to the magnetic field ($\theta = 0^\circ$), the magnetic Lorentz force $F = qvB\sin 0^\circ = 0$, so the beam continues undeflected.
From ISC 2026 Physics Paper 1, question 1(A)(ii).