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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: - Which of the following does not increase regularly?
- A piece of marble is projected from the earth’s surface with velocity of 50 m/s
- The current in a self-inductance L=40 mH is to be increased uniformly from 1A to 11 A
- Which of the following is the function of the step-up transformer?
- The work function of metals is in the range of 2 eV to 5 eV.
Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following does not increase regularly?
- A piece of marble is projected from the earth’s surface with velocity of 50 m/s
- The current in a self-inductance L=40 mH is to be increased uniformly from 1A to 11 A
- Which of the following is the function of the step-up transformer?
- The work function of metals is in the range of 2 eV to 5 eV.
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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