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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
- The radius of curvature of the convex face of a plano-convex lens is 12 cm
- If doubly ionised lithium atom is hydrogen like with atomic number 3, the wavelength
- The capacitance of two concentric spherical shells of radii R₁ and R₂ (R₂>R₁) is
- In a vessel, the gas is at a pressure P. If the mass of all the molecules
- Consider a uniform square plate of side ɑ and mass m. The moment of inertia
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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