00:01
Now in this question we want to find what is the potential difference? the electron must be accelerated to have same properties as an x -ray.
00:12
So the x -ray that we're given is some x -ray with wavelength of 0 .15 nanometers.
00:24
Now to get the same wavelength, it means that our electron would have had a same wavelength.
00:34
Have a certain momentum associated with its wavelength by the deep block this wavelength.
00:42
Momentum will be equal to h over lambda.
00:50
Using this momentum, we can find what is the kinetic energy, which is p square over 2m.
01:02
And this kinetic energy is determined by the potential difference, which is accelerated, which the the electron is accelerated across.
01:11
It is equals to q times v.
01:15
When q is the charge of our electron, v is the potential difference...