Advertisements
Advertisements
प्रश्न
Define the following term:
Coefficient of superficial expansion
Advertisements
उत्तर
The coefficient of superficial expansion is equal to the change in the area of a rod of area 1m2 when its temperature rises by 1°c.
APPEARS IN
संबंधित प्रश्न
Equal volumes of different liquids expand by a different amount when they are heated to the same rise in temperature.
State one application of thermal expansion of liquids.
An empty glass bottle is fitted with a narrow tube at its mouth. The open end of the tube is kept in a beaker containing water. When the bottle is heated, bubbles of air are seen escaping into water. Explain the reason.
Give scientific reason.
An ordinary glass bottle cracks when boiling water is poured into it, but a borosil glass bottle does not.
What are the different types of thermal expansions?
A bimetal strip is shown in the below diagram before heating. Draw a diagram to show how it bends on heating and on cooling.
The expansion in volume is called linear expansion.
Analogy:
Ordinary glass:: Glass tumbler.
Pyrex glass:: ______.
