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What is thermal expansion ? Write only i...

What is thermal expansion ? Write only its types.

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It is our common experience that most substances expand on heating and contract on cooling.
A change in the temperature of a body causes change in its dimensions. The increase in the dimensions of a body due to the increase in its temperature is called thermal expansion
There are three types of thermal expansion :
(a) Linear expansion : The expansion in length is called Linear expansion.
(b) Area expansion : The expansion in area is called Area expansion.
Volume expansion : The expansion in volume is called Volume expansion.
All are shown in the figure as below.
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KUMAR PRAKASHAN-THERMAL PROPERTIES OF MATTER-Question Paper (Section - D) (Answer following in brief :) Each carry 4 marks
  1. What is thermal expansion ? Write only its types.

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  2. In an experiment on the specific heat of a metal, a 0.20 kg block of t...

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