00:01
Let's discuss this question.
00:02
So here we need to review the multiple concept example here.
00:07
It is given to us that the screen after being accelerated from rest through a potential difference of 20 ,000 volts.
00:14
So the speed of the electrons are quite large and for accurate calculation of the speed, the effects of the spatial relativity must be taken into account.
00:25
So here we can say we need to find bb.
00:28
So here, velocity of b.
00:32
Here given as potential difference that is equal to 20 ,000 watts.
00:39
So here we know that kinetic energy is equal to e v0 which is equal to 20 ,000 electron volt.
00:55
So this will be equal to 20 ,000 multiplied by 1 .6 multiplied by 10 rise to minus 19 joules...