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At 0⁰C, 15 gm of ice melts to form water at 0⁰C. The change in entropy is
Options
(a) zero
(b) 18.5
(c) 15
(d) None of these
Correct Answer:
18.5
Explanation:
Heat absorbed = mL cal. = mL J joule
Change of entropy ∆S = Heat/Temperature
∆S = mLJ / Temperature = (15×80×4.2) / 273
∆S = 18.46 J/K.
Related Questions: - Two bubbles A and B (A>B) are joined through a narrow tube. Then
- Current in a coil changes from 4 A to zero in 0.1 second and the emf induced is 100V
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Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two bubbles A and B (A>B) are joined through a narrow tube. Then
- Current in a coil changes from 4 A to zero in 0.1 second and the emf induced is 100V
- A double slit experiment is performed with light of wavelength 500 nm. A thin film
- A change of 0.04 V takes place between the base and the emitter when an input
- The total energy of a particle executing SHM is 80 J
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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