00:01
In this question, we are given, we have a black body.
00:05
The temperature increases from 200 degrees celsius to 400 degrees celsius.
00:12
So we want to, in part a, you want to determine whether the frequency of the most intense spectral components increase, decrease, or, yeah, and whether is it reduced by half or increase by half, okay, by two times.
00:32
Okay so and then probably want to find a change in frequency okay so to solve this problem you'll be using uh wyance displacement law okay it says that lambda max t equals to 2 .90 times 10 to the negative 3 the calvin okay so lambda max is equal to c over f p because to then times t is then times t goes to 2 .90 times 10 to the negative tree.
01:14
So st increases from 200 degrees c to to 400 dpc which is 473 kelvin to 6 7 3 kelvin frequency also increases.
01:49
The equality of the of the equation okay and but f does not increase by two times okay so because the t does not increase by two times okay so the answer for this question is increase that's not double okay so this is the answer for part a okay, then in part b, you want to find a change in a frequency.
02:48
So, so just now we have an equation, c over f times t, equals to 2 .90 times 10 to the negative tree...