Jamb Physics 1981 Past Questions and Answers

Question 16:

• JAMB 1981

An example of a scalar quantity is

A. Velocity
B. Weight
C. Electric charge
D. Acceleration due to gravity
E. Momentum

Question 17:

• JAMB 1981

Heat was supplied to a block of ice at 0^oC until half of it melted. Which of the following statements is true?

A. The temperature rises and the ice expand
B. The temperature remains constant and the volume of the ice decreases
C. The ice gives out heat as it melts and the temperature decreases
D. The mass remains constant and the temperature increases
E. The temperature decreases because some heat is lost

Question 18:

• JAMB 1981

When a ray of light passes from water to glass, it is

A. Bent away from the normal
B. Bent towards the normal
C. Totally internally reflected
D. Absorbed by the glass
E. Broken into a pure spectrum

Question 19:

• JAMB 1981

The resistance of a 240V, 60 watt electric filament bulb is

A. 0.25\(\Omega\)
B. 480\(\Omega\)
C. 60\(\Omega\)
D. 240\(\Omega\)
E. 960\(\Omega\)

Question 20:

• JAMB 1981

An aircraft travelled from calabar to kano as follows: it flew first to ilorin convering a distance of 300km, 30^o west of North, and then flew 400km, 60^o East of North to kano. What is the resultant displacement?

A. 567km
B. 410km
C. 594km
D. 500km
E. 600km