Q. Cathode rays are produced when the pressure is of the order of
A) $2\ cm\ $of$\ Hg$
B) $0.1\ cm\ $of$\ Hg$
C) $0.01\ mm\ $of $Hg$
D) $1\ \mu m\ $of$\ Hg$
Explanation
The correct answer is Option C: $0.01\ mm\ $of $Hg$.
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.