Question
Physics Question on Photoelectric Effect
An oxide coated filament is useful in vacuum tubes because essentially
A
it has high melting point
B
it can withstand high temperature
C
it has good mechanical strength
D
it can emit electrons at relatively lower temperature
Answer
it can emit electrons at relatively lower temperature
Explanation
Solution
An oxide coated filament is useful in vacuum tubes because essentially, it can emit electrons at relatively lower temperatures.