00:01
So in the first place we have copper field okay.
00:08
Waveguide with the 0 .9 and 0 .4 inch cross section and 12 inch length.
00:19
Alright and we're looking frequency of 9 .0 gigahertz.
00:25
Alright so we need to find the cutoff frequency wavelength.
00:28
Now remember that i'm just giving a guide okay.
00:34
That for the first bit of cutoff frequency what we should be looking at is c over 2 a.
00:48
Right yes it is bit of light right and a is a larger dimension of the cross section.
00:56
Okay and then for the other bit of the question that is guide wavelength.
01:11
You should be looking at wavelength being equal to c over fc.
01:17
Right that is what you calculated there.
01:22
Then number three you should be looking at phase velocity.
01:27
Again remember phase velocity will be given as c divided by 1 minus fc over f squared and you get the square root...