Question

In a thermodynamic system, W represents the work done by the system and ΔU is the increase in internal energy. Which of the following statements is true?

विकल्प

• In an isothermal process, ΔU = -W

• In an adiabatic process, ΔU = -W

• In an isothermal process, ΔU = W

• In an adiabatic process, ΔU = W

Answer 1

In an adiabatic process, ΔU = -W

Explanation:

According to the first law of thermodynamics,

Q = ΔU + W

In adiabatic process, Q = 0

∴ ΔU = -W