CBSE Class 11-science Answered
pls show mathematically or say prove it ( explaining step by step) mathematically that "density of solid/liquid decreases with rise in temperature".
Asked by ppratim02 | 08 Jan, 2016, 08:37: PM
Expert Answer
When a given mass of a solid or a liquid is heated, it generally expands i.e., its volume increases. As density varies inversely as the volume, therefore, density of a solid or a liquid would decrease on heating.
Suppose V is the volume of a certain mass M of a solid or liquid at temperature T. Let the volume of the same mass increase to V', when the temperature is raised by a small amount .
If γ is coefficient of volume expansion of the solid/liquid, then
V'=V(1+γ) ... (1)
If is the density of the soild/liquid at temperature T
is the density of the soild/liquid at temperature
then,
Answered by Faiza Lambe | 11 Jan, 2016, 03:33: PM
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