Question

$\Delta$ U = q + w, is mathematical expression for:

• A. first law of thermodynamics
• B. second law of thermodynamics
• C. third law of thermodynamics
• D. zeroth law of thermodynamics

Answer 1

Answer: (A)

first law of thermodynamics

First law of thermodynamics is represented mathematically as $\Delta$ U = q + w, where $\Delta U$ internal is change in internal energy, q is heat absorbed and w is work done.