The First Law of Thermodynamics is essentially a specific application of which fundamental principle of physics?
A. Newton's Third Law
B. Conservation of Momentum
C. Conservation of Energy
D. Conservation of Mass
Answer: Option C
Solution (By JKSSB Mock Tests)
The first law of thermodynamics states that the heat supplied to a system (dQ) is equal to the change in its internal energy (dU) plus the work done by the system (dW): dQ = dU + dW. This is the law of conservation of energy applied to thermodynamic systems, stating that energy cannot be created or destroyed, only transferred or changed in form.
Explanation:
According to Boyle's Law, for a given mass of an ideal gas at constant temperature, the pressure is inversely proportional to its volume (P ∝ 1/V, or P1V1 = P2V2). If the volume is halved (V2 = V1/2), the pressure must double (P2 = 2P1) to keep the product constant.
No comments yet. Be the first to start the discussion!