Solved papers for JEE Main & Advanced JEE Main Solved Paper-2015
done JEE Main Solved Paper-2015 Total Questions - 1
question_answer1) Consider a spherical shell of radius R at temperature T. The black body radiation inside it can be considered as an ideal gas of photons with internal energy per unit volume\[u=\frac{U}{V}\propto {{T}^{4}}\]and pressure\[p=\frac{1}{3}\left( \frac{U}{V} \right).\]If the shell now undergoes an adiabatic expansion the relation between T and R is :
[JEE Main Solved Paper-2015 ]