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Area and Volume Expansion

The symbol us...

Question

The symbol used for volumetric expansion is

A

γ

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B

β

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C

L

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D

α

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Solution

The correct option is A $γ$
On heating a thin plate(lamina),the increase in its thickness is negligible as compared to the increase in length and breadth.
Thus,for a plate or lamina,we consider the expansion in its area which is called the superficial/surface expansion.

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