A gas is ionized  in the immeiate vicinity of the surface  of plane  electrode `I` (Fig) separated
Channel: Doubtnut
Date: 30/08/2020

A gas is ionized  in the immeiate vicinity of the surface  of plane  electrode `I` (Fig) separated  from electrodes  2 by  a distanae `l`. An alternating  voltage  varying   with time  `t` as `V = V_(0) sin omega t` is applie dto the electrodes. On decreasing  the frequency  `omega`  it was observed  that the  galvonometer  `G`  indicates  a current  only at `omega lt omega_(0)`, where `omega_(0)` is a certain  cut-off  frequency. FInd the mobility  of ions reaching  electrode 2 under  these conditions. img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/IROD_V01_C03_E01_213_Q01.png" width="80%"