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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
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Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A radioactive nucleus emits a beta particle. The parent and daughter nuclei are
- A parallel plate air capacitor has capacity C, distance of seperation between plate
- A circular disc X of radius R is made from an iron plate of thickness t and another disc
- The horizontal component of earth’s magnetic field at a place is 3×10⁻⁴ T
- A small oil drop of mass 10⁻⁶kg is hanging in at rest between two plates seperated
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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