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${}^{o}C$. 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${}^{-5}$ ${}^o{C}^{-1}$. 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${}^3$