Dual Nature Of Light Question 12
Assertion : Electric conduction in gases is possible at normal pressure. Reason : The electric conduction in gases depends not only upon the potential difference between the electrodes but also on the presence of ionized particles.
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason are both false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: D
Solution:
At normal pressure positive ions and electrons liberated by ionisation of gas atoms, due to cosmic rays are very small in number and they collide constantly with the gas atoms which are present in large numbers, and hence are unable to move a long distance under the electric field and soon get recombined i.e., flow of ions in the gas does not take place.
BETA
