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Superficial expansion is also known as
Superficial expansion is also known as
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Solution
The correct option is B 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.
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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