Question

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 u m of Hg
• E. 0.001 mm of Hg

Answer 1

Answer: (C)

Correct answer is (c) 0.01 mm of Hg