Definition and determination of linear - Jamb Physics Past Questions and Answers

Question 16:

• JAMB 2019

A metal rod has a length of 100cm at 200\(^oC\). At what temperature will its length be 99.4cm. If the linear expansivity of the material of the rod is 2 x 10\(^{-5}C^{-1}\)

A. 200\(^o\)C
B. 300\(^o\)C
C. 100\(^o\)C
D. -100\(^o\)C

Question 17:

• 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\(^3\)