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

Question 11:

• JAMB 1998

The linear expansivity of brass is 2 x 10^-5C^-1. If the volume of a piece of brass is 15.00cm³ at 0⁰C, What is the volume at 100^oC?

A. 16.03cm³
B. 16.00cm³
C. 15.09cm³
D. 15cm³

Question 12:

• JAMB 2004

Metal rods of length 20m each are laid end to end to form a bridge at 25oC. What gap will be provided between consecutive rails for the bridge to withstand 75oC?
[Linear expansivity of the material = 2.0 x 10-5K-1

A. 0.20m
B. 0.22m
C. 0.25m
D. 0.02m

Question 13:

• JAMB 2010

Two metals P and Q of length l₁ and l₂ are heated through the same temperature difference. If the ratio of the linear expansivities of P to Q is 2:3 and the ratio of lengths is 3:4. What is the ratio of increase in length of P to Q?

A. 7:5
B. 5:7
C. 1:2
D. 2:1

Question 14:

• JAMB 2013

A wire of length 100.0m at 30^o has linear expansive of 2x10^-5K^-1 Calculate the length of the wire at a temperature of - 10^oC

A. 100.08m
B. 100.04m
C. 99.96m
D. 99.92m

Question 15:

• 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\(^3\)