First Law of Thermodynamics
Physics ⇒ Heat and Thermodynamics
First Law of Thermodynamics starts at 10 and continues till grade 12.
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A gas is compressed adiabatically and its temperature increases. Explain this observation using the First Law of Thermodynamics.
Describe a practical example where the First Law of Thermodynamics is applied.
Explain the significance of the negative sign in the equation ΔU = Q - W.
Explain why internal energy is a state function but work and heat are not.
Explain why the First Law of Thermodynamics does not specify the direction of heat flow.
Which of the following equations correctly represents the First Law of Thermodynamics?
(1) ΔU = Q + W
(2) ΔU = Q - W
(3) Q = ΔU + W
(4) W = Q - ΔU
Which of the following is a correct statement of the First Law of Thermodynamics for a cyclic process?
(1) The net work done is zero.
(2) The net heat supplied is zero.
(3) The change in internal energy is zero.
(4) The temperature remains constant.
Which of the following is a limitation of the First Law of Thermodynamics?
(1) It does not specify the direction of heat flow.
(2) It cannot be applied to open systems.
(3) It violates the law of conservation of energy.
(4) It only applies to ideal gases.
Which of the following is NOT a path function?
(1) Work
(2) Heat
(3) Internal Energy
(4) All of the above
In an isochoric process, the work done by the system is _______.
In an isothermal process, the change in internal energy of an ideal gas is _______.
The First Law of Thermodynamics is a statement of conservation of _______.
The First Law of Thermodynamics is also known as the law of conservation of _______.
True or False: The First Law of Thermodynamics can be applied to both reversible and irreversible processes.
True or False: The First Law of Thermodynamics can be applied to open, closed, and isolated systems.
True or False: The First Law of Thermodynamics implies that it is possible to construct a perpetual motion machine of the first kind.
