Solids - Jamb Physics Past Questions and Answers

Question 26:

• JAMB 2019

A copper rod, 5m long when heated through 20c, expands by 1mm. If a second copper rod, 2.5m long is heated through 5c, by how much will it expand?

A. 4mm
B. 2mm
C. 0.25mm
D. 0.12mm

Question 27:

• JAMB 2020

The linear expansivity of brass is 2 x 10\(^{-5}\) \(^oC^{-1}\). If the volume of piece of brass is 10cm\(^3\) at 0\(^o\)C. What will be its volume at 100\(^o\)C?

A. 10.06cm\(^3\)
B. 10.04 cm\(^3\)
C. 10.02 cm\(^3\)
D. 10.20 cm\(^3\)