Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoCalorimetryMedium2 minQB

PhysicsMediumsingle choice

Passage / Comprehension

The figure below shows a plot of temperature vs. heat energy supplied to $1.00 kg$ of some substance. The substance has melting point of $- 10. 0^{\circ} C$ and is a gas at temperatures above $20. 0^{\circ} C$ .

Compare the specific heat capacity of the substance in solid, liquid and gaseous state

Options:

Answer:

Solution:

Use each straight segment; graph heat units are kilocalories:
$Δ Q = m s Δ T$
$s_{so l i d} = \frac{6}{m \times 10} = \frac{0.6}{m}$
$s_{l i q u i d} = \frac{130 - 106}{m \times 30} = \frac{0.8}{m}$
$s_{g a s} = \frac{346 - 330}{m \times 40} = \frac{0.4}{m}$
So liquid is largest and gas is smallest.

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Calorimetry

⏱ 2mℹ️ Source: QB

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