HSC Science (Computer Science) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions for Physics

A flywheel is revolving with a constant angular velocity. A chip of its rim breaks and flies away. What will be the effect on its angular velocity?

A flywheel of mass 8 kg and radius 10 cm rotating with a uniform angular speed of 5 rad/sec about its axis of rotation, is subjected to an accelerating torque of 0.01 Nm for 10 seconds. Calculate the change in its angular momentum and change in its kinetic energy. 

The molar specific heat of a gas at constant volume is 12307.69 J kg^-1 K^-1. If the ratio of the two specific heats is 1.65, calculate the difference between the two molar specific heats of gas. 

State factors on which the amount of heat radiated by a body depends.

Calculate the ratio of two specific heats of polyatomic gas molecules.  

Derive Mayer’s relation.

Two systems at the same temperature are said to be in ______ 

For work done to be reversible, the process should be ______ 

Heating a gas in a constant volume container is an example of which process?

When two objects are said to be in thermal equilibrium?

What is a thermodynamic process?

Draw a p-V diagram of the reversible process. 

Draw a p-V diagram of the irreversible process. 

Draw a p-V diagram showing positive work with varying pressure. 

Draw a p-V diagram showing negative work with varying pressure. 

Draw a p-V diagram showing positive work at constant pressure. 

State the assumptions made for thermodynamic processes.

Differentiate between the reversible and irreversible processes.

Explain the cyclic process. 

3 mole of a gas at temperature 400 K expands isothermally from an initial volume of 4 litres to a final volume of 8 litres. Find the work done by the gas. (R = 8.31 J mol^-1 K^-1)