The increase in area of an object on heating, is known as superficial expansion.

True

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False

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A cubical metal solid block is heated. It will experience only a superficial expansion.

The increase in area of the solid in heating is called

a)superficial expansion b)linear expansion

c)cubical expansion d)quadar expansion

A metal cube of side 5cm at 28C on heating to 578C increases by 0.15cm.Calculate the coefficient of linear superficial and linear expansion.

20 cm \times 30 cm

25^{\circ} C

75^{\circ} C

1.32 {cm}^{2}

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