Thermal Expansion - Jamb Physics Past Questions and Answers

Question 26:

• JAMB 2016

A wire of length 10m is cooled from 50^oC to 10^oC. Calculate the decrease in the length of the wire. [c = 3 x 10^-5K^-1]

A. 1.8 x 10^-4m
B. 1.5 x 10^-4m
C. 1.5 x 10^-3m
D. 1.8 x 10^-3m

Question 27:

• JAMB 2017

The thermal expansion of a solid is an advantage in

A. Balance wheel of a watch
B. Construction of steel rail lines
C. Construction of large steel bridges
D. Fitting of tyres on wheels

Question 28:

• JAMB 2018

The linear expansivity of brass is 2 x 10\(^{-5}\) C\(^{-1}\). If the volume of a piece of brass is 15.00cm at 0°C, what is the volume at 100°C

A. 16.03cm\(^3\)
B. 15.09cm\(^3\)
C. 16.00cm\(^3\)
D. 15.03cm\(^3\)

Question 29:

• 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 30:

• 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