Q. Which of the following devices makes use of the electrons to strike certain substances to produce fluorescence
A) Thermionic valve
B) Photoelectric cell
C) Cathode ray oscilloscope
D) Electron gun
Explanation
The correct answer is Option C: Cathode ray oscilloscope.
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.