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If ∆U and ∆W represent the increase in internal energy and work done by the system respectively in a thermodynamical process, which of the following is true?
Options
(a) ∆U = – ∆W, in an adiabatic process
(b) ∆U = ∆W, in an isothermal process
(c) ∆U = ∆W, in an adiabatic process
(d) ∆U = – ∆W, in an isothermal process
Correct Answer:
∆U = – ∆W, in an adiabatic process
Explanation:
BY first law of thermodynamics, ∆Q = ∆U + ∆W
In adiabatic process, ∆Q = 0 ∆U = – ∆W
In isothermal process, ∆U = 0 ∆Q = ∆W
Related Questions: - A small signal voltage V(t)=V₀ sin ωt is applied across an ideal capacitor C
- A particle of mass m is projected with a velocity v making an angle of 45°
- An ideal gas is compressed to half its initial volume by means of several processes.
- A bucket full of water is revolved in a vertical circle of 2m
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Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A small signal voltage V(t)=V₀ sin ωt is applied across an ideal capacitor C
- A particle of mass m is projected with a velocity v making an angle of 45°
- An ideal gas is compressed to half its initial volume by means of several processes.
- A bucket full of water is revolved in a vertical circle of 2m
- A layer of glycerine of thickness 1 mm present between a large surface area of 0.1 m².
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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