Heat is supplied to a certain homogenous sample of matter, at a uniform rate. Its temperature is plo

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10-1.Thermometry, Thermal Expansion and Calorimetry

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Heat is supplied to a certain homogenous sample of matter, at a uniform rate. Its temperature is plotted against time, as shown. Which of the following conclusions can be drawn

A

Its specific heat capacity is greater in the solid state than in the liquid state

B

Its specific heat capacity is greater in the liquid state than in the solid state

C

Its latent heat of vaporization is greater than its latent heat of fusion

D

Both $(b)$ and $(c)$

Solution

(c) The horizontal parts of the curve, where the system absorbs heat at constant temperature must depict changes of state.

Here the latent heats are proportional to lengths of the horizontal parts.

In the sloping parts, specific heat capacity is inversely proportional to the slopes.

Standard 11

Physics

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