Thermal Expansion - Jamb Physics Past Questions and Answers

Question 21:

• 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 22:

• JAMB 2011

Which of the following materials has an increase in resistance with temperature?

A. Water
B. Metals
C. Wood
D. Electrolyte

Question 23:

• 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 24:

• JAMB 2015

In which of the following device in the expansion of solid is a disadvantages?
I. Simple pendulum
II. Fire alarms
III. Thermostat
IV. Bimetallic thermometer

A. III only
B. II & III only
C. I only
D. II, III & IV only

Question 25:

• JAMB 2015

In which of the following device in the expansion of solid is a disadvantages?
I. Simple pendulum
II. Fire alarms
III. Thermostat
IV. Bimetallic thermometer

A. III only
B. II & III only
C. I only
D. II, III & IV only