Verified Solution • 2025–26 Session moderate

QJEEM22Ph9fc8: JEE Main 2022 Physics - Class 12 JEEM22Ph9fc8 Solution: Given below are two statements : One is labelled as Assertion…

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : In an uniform magnetic field, speed and energy remains the same for a moving charged particle.

Reason (R) : Moving charged particle experiences magnetic force perpendicular to its direction of motion.

Multiple Choice Options

  • A Both (A) and (R) are true and (R) is the correct explanation of (A).
  • B Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
  • C (A) is true but (R) is false.
  • D (A) is false but (R) is true.

Step-by-Step Verified Solution

Magnetic force F→⊥v→\overrightarrow F \bot \overrightarrow v

⇒Wb=0\Rightarrow {W_b} = 0

⇒ΔKE=0\Rightarrow \Delta KE = 0 and speed remains constant.

Related Learning Resources & Exam Preparation