Some study tips for Thermodynamics

1. Always make sure you Heat(Q) ,Internal Energy(U) & Work(W) with correct sign in equation
ΔU=Q-W

W is positive when work done by the system(Increase in Volume)
W is negative when work done on the system(Decrease in Volume)
Q is positive when heat is given to the system
Q is negative when heat is taken from the system

2. workdone in a cycle is equal to the area enclosed on the PV diagram

3. Change in Internal energy is zero for a cycle
So Net Heat=Net Work done

4.All Bodies emit radiation at all temperature.Radiation emmited are of diffrent frequencies.Frequency at which most radiation are emmitted are directly proportional to Temperature of the body.

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