MHT-CET : Physics Entrance Exam

### MHT - CET : Physics - Kinetic Theory of Gases Glossary

 ·         Free Path: Distance covered between two successive collisions is called free path. ·         Mean Free Path: The average distance travelled by a molecule between two successive collisions is known as the mean free path. ·         Mean Square Velocity: The average of the squares of the velocities of the individual molecules is known as the mean square velocity. ·         Root Mean Square Velocity (RMS Velocity): The square root of the mean of the squares of the individual velocities of different molecules of the gas at a given temperature. ·         Specific Heat: The specific heat of a substance is the amount of heat required to raise the temperature of unit mass of the substance through one degree. ·         Molar Specific Heat: The quantity of heat required to raise the temperature of a mole of the substance through one degree. ·         Internal Energy: The increase in the kinetic energy of the molecules of a gas is called the increase in its internal energy. ·         Principal Specific Heat of a Gas at Constant Volume (cv): It is the amount of heat required to raise the temperature of unit mass of the gas through one degree keeping the volume constant. ·         Principal Specific Heat of a Gas at Constant Pressure (cp): It is the amount of heat required to raise the temperature of unit mass of the gas through one degree while keeping the pressure constant. ·         Internal Latent Heat: Internal latent heat is the part of the latent heat which is required to do work against intermolecular force of attraction so that intermolecular distance changes, i.e., there is a change in the state of the substance at constant temperature and pressure. ·         External Latent Heat: External latent heat is the part of the latent heat required to do work against the external pressure during the change in volume at constant temperature and pressure. ·         Molar Specific Heat of a Gas at Constant Pressure: It is the amount of heat required to raise the temperature of one mole of the gas through one degree while keeping the pressure constant. ·         Molar Specific Heat of a Gas at Constant Volume: It is the amount of heat required to raise the temperature of one mole of the gas through one degree while keeping the volume a constant. ·         Latent Heat: It is the energy required to change the state of a substance at constant temperature (melting point/boiling point).

 Career in India | Jobs in India