Dual Nature Of Light Question 36
Question: When electron beam passes through an electric field, they gain kinetic energy. If the same beam passes through magnetic field, then
Options:
A) Their energy increases
B) Their momentum increases
C) Their potential energy increases
D) Energy and momentum both remains unchanged
Show Answer
Answer:
Correct Answer: D
Solution:
Because magnetic force always points perpendicular to the particle velocity. That is why velocity remains unchanged thereby keeping energy $ ( \frac{1}{2}mv^{2} ) $ and momentum (mv) unchanged.
BETA
