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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 man weighing 60 kg climbs a staircase carrying a 20 kg load on his hand
- A beaker of radius 1.5 cm is filled with a liquid of surface tension 0.075 N/m
- The ratio of specific charge of an α-particle to that of a proton is
- A current of 5 A is flowing at 220 V in the primary coil of a transformer. If the voltage
- A particle free to move along X-axis has potential energy given as U(X) =k(1-e⁻ˣ²)
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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