question : find intrinsic carrier concentration at T=200k for silicon (in cm^-3).
Answer is attached.In that why is that (200/300)^3 is added there.my only hope is this forum.Thank you

 

Don't start new threads for the same problem -- it makes it impossible for anyone to keep track of what you're talking about.

 

okay.i dont do.now please clear my doubt

 

Please post the base equations that govern this. As I said, it has been more than two decades since I've done this stuff. I'm not going to go track down stuff that you should have at your finger tips.

Post the problem and your entire attempt at a solution starting from the governing equations.