A square aluminium plate has each side equal to at

PHYSICS · Subjective · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

A square aluminium plate has each side equal to 20 cm20\,\text{cm} at 20∘C20^{\circ}\text{C}. If the temperature is raised to 100∘C100^{\circ}\text{C} and the coefficient of superficial expansion of aluminium is β=4.4×10−5 ∘C−1\beta = 4.4 \times 10^{-5}\,^{\circ}\text{C}^{-1}, calculate the increase in its area, expressing your answer in cm2\text{cm}^2.

Related theory

Browse the problem library