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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
Related Questions: - A ray enters a glass sphere of refractive index μ=√3 at an angle of incidence of 60⁰
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Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A ray enters a glass sphere of refractive index μ=√3 at an angle of incidence of 60⁰
- A certain number of spherical dropes of a liquid of radius r coalesce to form a single
- The internal energy change in a system that has absorbed 2 kcals of heat
- If a solid sphere of mass 1 kg and radius 0.1 m rolls without slipping at a uniform
- A ray of light is incident at an angle of incidence i, on one face of a prism
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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