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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 source of sound of frequency 256 Hz is moving rapidly towards a wall with a velocity
- The de-Broglie wavelength of an electron in the first Bohr orbit is
- If the radioactive dacay constant of radium is 1.07 x 10⁻⁴ year⁻¹, then its half-life
- An electron revolves in a circle at the rate of 10¹⁹ rounds per second.
- Stress to strain ratio is equivalent to
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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