Post Utme Physics Past Questions and Answers

Question 81:

The ice and steam points of a local liquid in glass thermometer are 10 a and 90 a respectively. What will the thermometer read when the temperature is \(30{ }^{U} C\) ?

A. \(40 a\)
B. \(38 a\)
C. \(36 a\)
D. \(34 a\)

Question 82:

The lower and upper fixed points on a thermometer are 40 and 120 respectively. Its reading at \(60^{\circ} \mathrm{C}\) is ____________

A. 60
B. 40
C. 160
D. 88

Question 83:

The pressure exerted by a given mass of gas in a container

A. Decreases if the container is heated
B. Increases if the molecules of the gas move faster
C. Increases if the volume of the container is doubled
D. Decreases as the kinetic energy of the gas molecules increases

Question 84:

The temperature in an electric iron is regulated by ____________

A. Thermometer
B. Bimettalic strip
C. Steel
D. Conductor

Question 85:

Water has an anomalous behavior between \(0^{\circ}\) and \(4^{\circ} \mathrm{C}\). Which of the following is correct?

A. Mass of water increases between \(0^{\circ} \mathrm{C}\) and \(4^{\circ} \mathrm{C}\)
B. Density of water decreases between \(0^{\circ} \mathrm{C}\) and \(4^{\circ} \mathrm{C}
C. Volume of water increases between \(0^{\circ} \mathrm{C}\) and \(4^{\circ} \mathrm{C}
D. Volume of water decreases between \(0^{\circ} \mathrm{C}\) and \(4^{\circ} \mathrm{C}\)