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When 1 kg of ice at 0⁰C melts to water at 0⁰C, the resulting change in its entropy, taking latent heat of ice to be 80 cal/⁰C, is
Options
(a) 273 cal/K
(b) 8 x 104 cal/K
(c) 80 cal/K
(d) 293 cal/K
Correct Answer:
293 cal/K
Explanation:
Change in entropy is given by
dS = dQ / T or ∆S = ∆Q / T = mLf / 273
∆S = 1000 x 80 / 273 = 293cal / K
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Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If wavelength of a wave is λ=6000 Å, then wave number will be
- Identify the wrong statement
- Photon of frequency ν has a momentum associated with it. If c is the velocity
- Consider two concentric spherical metal shells of radii r₁ and r₂( r₂>r₁). If the outer
- Three masses are placed on the x-axis : 300 g at origin, 500 g at x = 40 cm
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Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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