At what pressure should the gases in the sealed tube be maintained in the Hollow cathode lamp?
A. 1 to 5 torr
B. 20 to 30 torr
C. 40 to 50 torr
D. 50 to 55 torr
Answer:A
At what pressure should the gases in the sealed tube be maintained in the Hollow cathode lamp?
A. 1 to 5 torr B. 20 to 30 torr C. 40 to 50 torr D. 50 to 55 torr
Explanation: It consists of a cylindrical cathode and an anode made of tungsten. The tube is sealed and neon and argon are filled at a pressure of 1 to 5 torr.