Thermal Expansion of Metal Plate with Hole · BPhO 2010 #10
Physics · thermodynamics
Problem
A long uniform metal plate has a square hole cut in it. The plate is uniformly heated so that it expands a small amount. What is a correct statement about the hole now?
A. It is still square
B. It is rectangular in shape
C. It has decreased in area
D. It has remained the same area