Find CBSE Class 11 Physics Practice Paper (Set- IX) for the coming exam. This paper contains important questions from 8th unit (Thermodynamics) of physics. These questions will not only help the students to prepare for exams in a better manner, but will also help them in understanding the depth with which a topic should be studied.
Few sample questions from the Question Paper are given below:
Q. Give two real life examples in which internal energy of a system is converted into work.
Q. The volume of an ideal gas is V at a pressure P. When the pressure is increased by the amount ΔP then, the change is volume is V1 under isothermal condition and V2 in adiabatic condition. Which one will be greater V1 or V2? Give reason.
Q. What do you understand by thermodynamic equilibrium?
Q. In a P-V diagram, draw an adiabatic and isothermal curve and explain why adiabatic curve is always steeper than an isothermal curve.
Q. State and explain the principle of a refrigerator? What do you understand by coefficient of performance of refrigerator? Is it true that coefficient of performance is always less than 1? Give reason.