Dual Nature Of Light Question 64
Question: The colour of the positive column in a gas discharge tube depends on [Kerala (Engg.) 2002]
Options:
A) The type of glass used to construct the tube
B) The gas in the tube
C) The applied voltage
D) The material of the cathode
Show Answer
Answer:
Correct Answer: B
Solution:
The colour of the positive column in a discharge tube depends on the type of gas e.g. For air, colour is purple red, for $ H_{2} $ , colour is Blue etc.
BETA
