# Is a Slow Process Always Isothermal? is a Quick Process Always Adiabatic? - Physics

Is a slow process always isothermal? Is a quick process always adiabatic?

#### Solution

For an isothermal process, PV =K , where P is P is pressure, V is volume of the system and Kis constant. In an isothermal process, a small change in V produces only a small change in p, so as to keep the product constant. On the other hand, in an adiabatic process, "P""V" ^gamma = "k" , gamma = ("C"_"P")/("C"_"V")> 1

is the ratio of  heat capacities at constant pressure and volume, respectively, and k is a constant. In this process, a small increase in volume produces a large decrease in pressure. Therefore, an isothermal process is considered to be a slow process and an adiabatic process a quick process.

Concept: Kinetic Theory of Gases - Concept of Pressure
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#### APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 5 Specific Heat Capacities of Gases
Q 8 | Page 76