wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Heat is supplied to a solid material at a constant rate. The variation of temperature of the material with heat input is as shown in the figure.The slope of DE represents


A
Latent heat of liquid
No worries! Weā€˜ve got your back. Try BYJUā€˜S free classes today!
B
Latent heat of vaporization
No worries! Weā€˜ve got your back. Try BYJUā€˜S free classes today!
C
Heat capacity of vapour
No worries! Weā€˜ve got your back. Try BYJUā€˜S free classes today!
D
Inverse of heat capacity of vapour
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D Inverse of heat capacity of vapour
Let us assume c to be heat capacity of vapour.
We know from the definition of heat capacity that,
dQ=cdT
dTdQ=1c = Slope of TQ graph.
where Q is the heat input and T is the temperature.
In the given graph, AB and BC represent the phase changes in solid material. At AB, the solid material converts into liquid and at BC, it converts into vapour.
i.e in part DE, the material is in vapour state.
Hence, we can conclude that the slope of TQ graph at DE represents the inverse of the heat capacity of vapour.
Thus, option (d) is the correct answer.

flag
Suggest Corrections
thumbs-up
7
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon