Jamb Physics 2018 Past Questions and Answers

Question 31:

• JAMB 2018

Electrical appliances in homes are normally earthed so that

A. A person touching the appliances is safe from electric shock
B. Both the a.c. and d.c. sources can be used
C. The appliances are maintained at a higher pd than the earth
D. The appliances are maintained at a lower pd than the earth

Question 32:

• JAMB 2018

The process whereby a liquid turns spontaneously into vapour is called

A. Regelation
B. Evaporation
C. Boiling
D. Sublimation

Question 33:

• JAMB 2018

The differences observed in solids, liquids and gases may be accounted for by

A. Their relative masses
B. Their melting points
C. The spacing and forces acting between the molecules
D. The different molecules in each of them

Question 34:

• JAMB 2018

Convex mirrors are used as driving mirrors because images formed are

A. Erect, Virtual and diminished
B. Erect, real and diminished
C. Erect, virtual and magnified
D. Inverted, virtual and diminished

Question 35:

• JAMB 2018

Musical instruments playing the same note can be distinguished from one another owing to the difference in their

A. Quality
B. Pitch
C. Intensity
D. Loudness