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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.
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Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A series combination of resistor (R), capacitor (C), is connected to an AC source
- A spring of spring constant 5 x 10³ Nm⁻¹ is streched intially by 5 cm from
- A cricket ball of mass 250 g collides with a bat with velocity 10 m/s
- An alternating electric field, of frequency v, is applied across the dees (radius = R)
- Two discs of same material and thickness have radii 0.2 m and 0.6 m.
Topics: Thermodynamics (179)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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