Solids - Jamb Physics Past Questions and Answers

Question 11:

• JAMB 1992

A bridge made of steel is 600m long. What is the daily variation in its length if the night-time and daytime temperatures are 10°C and 35°C respectively. The linear expansivity of steel is 0.000012C\(^{-1}\).

A. 0.18cm
B. 1.80cm
C. 18.00cm
D. 1800cm

Question 12:

• JAMB 1993

A metal rod 800mm long is heated from 10^oC to 95^oC. If it expands by 1.36mm, the linear expansivity of the metal is

A. 2.0 x 10²K^-1
B. 2.0 x 10²K^-1
C. 5.0 x 10^-3K^-1
D. 2.0 x 10^-5K^-1

Question 13:

• JAMB 1995

A rectangular metal block of volume 10^-6m³ at 273k is heated to 573k. If its coefficient of linear expansion is 1.2 x 10^-5k^-1, the percentage change of it volume is

A. 1.5%
B. 1.1%
C. 0.4%
D. 0.1%

Question 14:

• 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 15:

• JAMB 2003

On a fairly cool rainy day when the temperature is 20^oC, the length of a steel railroad track is 20m. What will be its length on a hot a dry day when the temperature is 40^oC?
[coefficient of linear expansion of steel = 11 x 10^-6K^-1]

A. 20.013m
B. 20.009m
C. 20.004m
D. 20.002m