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Question
Surface expansion is seen most commonly in:
Surface expansion is seen most commonly in:
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Solution
The correct option is A Plate
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.
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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