Jamb Physics 2013 Past Questions and Answers

Question 11:

• JAMB 2013

The coefficient of friction between two perfectly smooth surface is

A. Infinity
B. One
C. Half
D. Zero

Question 12:

• JAMB 2013

What effort will a machine of efficiency 90% apply to lift a load of 180N if its efforts arm is twice as long as its load arm?

A. 80N
B. 90N
C. 100N
D. 120N

Question 13:

• JAMB 2013

Calculate the work done when a force of 20N stretches a spring by 50mm.

A. 0.5J
B. 1.5J
C. 2.0J
D. 2.5J

Question 14:

• JAMB 2013

At what depth below the sea-level would one experience a change of pressure equal to one atmosphere? Density of sea water = 1013kg^-3, one atmosphere = 0.01 x 10⁵Nm^-2, g = 10ms^-2

A. 0.1m
B. 1.0m
C. 10.0m
D. 100.0m

Question 15:

• JAMB 2013

What volume of alcohol will have same mass as 4.2m^-3 of petrol?
Density of alcohol = 8.4 x 10²kgm^-3, density of petrol =7.2x10³kgm^-3

A. 0.8m³
B. 1.4m³
C. 3.6m³
D. 49.m³