The coefficient of linear expansion of ordinary glass is three times that of Pyrex glass.An ordinary glass rod and a Pyrex glass rod of equal lengths at room temperature are dropped into boiling water.The change in length of the ordinary glass rod will be ___________ the change in length of the Pyrex glass rod.
A)1/9
B)1/3
C)equal to
D)3 times
E)9 times

Question

Quizplus · Accepted Answer

Since the coefficient of linear expansion of ordinary glass is three times that of Pyrex glass, the change in length of the ordinary glass rod will be three times that of the Pyrex glass rod. Therefore, the answer is D, 3 times.

The Coefficient of Linear Expansion of Ordinary Glass Is Three