Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoCalorimetryMedium2 minQB

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Passage / Comprehension

One kilogram of a substance (initially solid at $0^{\circ} C$ ) is supplied heat at a constant rate of $2 kcal/min$ . Its solid linear expansion coefficient is $α = 4 \times 1 0^{- 6}^{\circ} C^{- 1}$ . Its temperature varies with time as shown.

Source diagram 90

The specific heat capacity of the liquid is:

Options:

Answer:

Solution:

The liquid warms from 20 °C to 110 °C in 15 min.

$Q = 2000 \times 15$

$Q = 30000 cal$

$c = \frac{Q}{m Δ T}$

$c = \frac{30000}{1000 \times 90}$

$c = \frac{1}{3} cal g^{- 1}^{\circ} C^{- 1}$

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Calorimetry

⏱ 2mℹ️ Source: QB

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