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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
- Two point charge +9e and +e are at 16 cm away from each other.
- Two spheres A and B of masses m and m respectively collide. A is at rest initially
- If the dipole moment of a short bar magnet is 1.25 A-m², the magnetic field on its
- A parallel plate air capacitor is charged to a potential difference of V volts.
- A boat of mass 40 kg is at rest.A dog of mass 4 kg moves in the boat
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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