Get 65% Discount on Preventive Health Checkup
Career in India        

MHT-CET : Physics Entrance Exam

MHT - CET : Physics - Thermodynamics Glossary

Top of Form

 

         System: The region or space which we isolate in our imagination from all other parts
of space and on which we focus our attention.

         Environment: Everything outside the system is called the surrounding or the environment.

         The First Law of Thermodynamics: If an amount of heat dQ flows into a system, then a part of it appears as increase in the internal energy dU of the system and/or the remaining appears as the work done by the system on its surroundings.
\ dQ = dU + dW

         Internal Energy (U): The total energy content of a system. It is the sum of energy possessed by a system due to molecular motion and molecular configuration.

         Adiabatic Process: A process in which no heat is transferred to or from a system, i.e., dW= 0. (Total energy of the system remains constant.)

         Isothermal Process: A process in which the temperature of a system remains constant. In this process dU = 0.

         Isobaric Process: A process in which pressure remains constant.

         Isochoric Process: A process in which volume remains constant, dW = 0.

         Cyclic Process: A process in which the system returns to its original state after passing through different states.

         Isotherm/Isothermal: A curve which represents graphically the relation between pressure and volume of a gas at constant temperature.

         Phase Diagram: A diagram of pressure against temperature of a substance is called the phase diagram.

         Ice Line: A curve in the phase diagram which joins all the points showing the pressure and temperature at which ice and water can exist in equilibrium with each other.

         Steam Line: A curve in the phase diagram which joins all the points showing the pressure and temperature at which water and vapour can coexist in equilibrium with each other.

         Triple Point of Water: The point in the phase diagram at which ice, water and steam can exist in critical equilibrium.

         van der Wall's Equation of State:

(V - b) = RT

        
where
p = pressure and V = volume of one mole of a real gas, a, b = constants whose value depends on the nature of the gas.
R = universal gas constant.

         Joule's Law: Whenever work is converted into heat, the radio of work done to heat produced is always a constant.

= J or W = JH

        
Where J = mechanical equivalent of heat.

         Adiabatic Wall: A boundary separating a system from its surrounding that is perfectly conducting.

Bottom of Form

 


Career in India | Jobs in India
© All Rights Reserved, indicareer.com | partners | Sitemap