Question

if temperature of hot black body is raised by 5 percentage rate of heat is radicated would be increased by how many percent​

Answer 1

Answer:

21.55%

Explanation:

power radiated is directly proportional to (temp)^4 (according to Stephen's law)

then I explained in the form of picture posted below.

I posted a simple method also in 2nd picture its is only applicable upto 1-5% asked in questions like this.

in both methods answer is nearly equal any of it tried in exams(but remember the exception above said)

hope you understand this.