Class 11Physics1 Thermal Properties of Matter: Thermometry, Expansion and CalorimetryLatent Heat and Heating Curve
Easy$Assertion :$ Melting of a solid causes no change in internal energy.
$Reason :$ Latent heat is the heat required to melt a unit mass of a solid.
$Reason :$ Latent heat is the heat required to melt a unit mass of a solid.
- AIf both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
- BIf both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
- CIf the Assertion is correct but Reason is incorrect.
- DIf the Assertion is incorrect but the Reason is correct.
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Similar Questions
$A$ block of ice with mass $m$ falls into a lake. After impact,a mass of ice $m/5$ melts. Both the block of ice and the lake have a temperature of $0^{\circ}C$. If $L$ represents the latent heat of fusion,the minimum distance the ice fell before striking the surface is
Medium
View SolutionMatch the following according to conversion by heat:
Column-$I$ Column-$II$ $(a)$ Required heat to convert solid into gaseous. $(i)$ Latent heat of fusion $(b)$ Required heat to convert solid into liquid. $(ii)$ Latent heat of vaporization
| Column-$I$ | Column-$II$ |
|---|---|
| $(a)$ Required heat to convert solid into gaseous. | $(i)$ Latent heat of fusion |
| $(b)$ Required heat to convert solid into liquid. | $(ii)$ Latent heat of vaporization |
Easy
View SolutionAn experiment takes $10\, minutes$ to raise the temperature of water in a container from $0\,^oC$ to $100\,^oC$ and another $55\, minutes$ to convert it totally into steam by a heater supplying heat at a uniform rate. Neglecting the specific heat of the container and taking the specific heat of water to be $1\, cal/g\,^oC$,the heat of vaporization according to this experiment will be ........ $cal/g$.
Values for latent heat in Column-$I$ and its values are given in Column-$II$. Match the following:
Column-$I$ Column-$II$ $(a)$ Latent heat of vaporization $L_V$ $(i)$ $22.6 \times 10^5 \, J/kg$ $(b)$ Latent heat of fusion $L_f$ $(ii)$ $33.3 \times 10^5 \, J/kg$ $(iii)$ $3.33 \times 10^5 \, J/kg$
| Column-$I$ | Column-$II$ |
| $(a)$ Latent heat of vaporization $L_V$ | $(i)$ $22.6 \times 10^5 \, J/kg$ |
| $(b)$ Latent heat of fusion $L_f$ | $(ii)$ $33.3 \times 10^5 \, J/kg$ |
| $(iii)$ $3.33 \times 10^5 \, J/kg$ |
Easy
View Solution$A$ solid material is supplied with heat at a constant rate and the temperature of the material changes as shown in the graph. From the graph,the false conclusion drawn is:
Medium
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