Q. In Thomson’s method of determining $e/m$ of electrons
A) Electric and magnetic fields are parallel to electrons beam
B) Electric and magnetic fields are parallel to each other and perpendicular to electrons beam
C) Magnetic field is parallel to the electrons beam
D) Electric field is parallel to the electrons beam
Explanation
The correct answer is Option B: Electric and magnetic fields are parallel to each other and perpendicular to electrons beam.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.