Jamb Physics 1997 Past Questions and Answers

Question 16:

• JAMB 1997

An empty 60 litre petrol tank has a mass of 10kg. Its mass when full of fuel of relative density 0.72 is

A. 7.2kg
B. 33.2kg
C. 43.2kg
D. 53.2kg

Question 17:

• JAMB 1997

The length of mercury thread when it is at 0°C, 100°C and at an unknown temperature \(\theta\) is 25mm, 225mm and 175mm respectively. The value of \(\theta\) is

A. 85.0^oC
B. 80.0^oC
C. 75.0^oC
D. 70.0^oC

Question 18:

• JAMB 1997

Equal masses of copper and rubber are raised to the same temperature. After sometimes, the copper was observed to be at a lower temperature because

A. The specific heat capacity of copper is lower than that of rubber
B. Copper expands more than rubber
C. The specific heat capacity of rubber is lower than that of copper
D. Rubber expands more than copper

Question 19:

• JAMB 1997

Before starting a journey, the tyre pressure of a car was 3 x 10⁵Nm^-2 at 27^oC. At the end of the journey, the pressure rose to 4 x 10⁵Nm^-2. Calculate the temperature of the tyre after the journey, assuming the volume is constant

A. 400^oC
B. 300^oC
C. 273^oC
D. 127^oC

Question 20:

• JAMB 1997

What happens when a, certain quantity of pure ice is completely changed to water at 0oC?

A. Latent heat is absorbed, the mass remains constant, and the volume decreases
B. Latent heat is given out, the mass remains constant and the volume decreases
C. Latent heat is given out, the mass increases and the volume remains constant
D. Latent heat is absorbed, the mass decreases and the volume increases