A square plate has three circular holes of same radius so that centre of each hole is equidistant from the centre of the square plate. $△ A BC$ can be formed by joining the centres of the holes as shown in the figure. The plate is placed on a frictionless horizontal surface. If we increase the temperature, then

Question

Source Q24 diagram

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Answer:

A

Solution:

All distances scale by the same factor
$1 + α Δ T$
Each side of the triangle increases.
Uniform scaling preserves the angle.

TestHub · Accepted Answer

All distances scale by the same factor 1 + α Δ T Each side of the triangle increases. Uniform scaling preserves the angle.

Physics - Heat & Thermo Question with Solution | TestHub

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