Jamb Physics 2002 Past Questions and Answers

Question 31:

• JAMB 2002

When connected to a mains of 250V, the fuse rating in the plug of an electric device of 1 KW is

A. 2 A
B. 3 A
C. 4 A
D. 5 A

Question 32:

• JAMB 2002

The eye controls the amount of light reaching the retina by adjusting the

A. Cornea
B. Iris
C. Retina
D. Optic nerve

Question 33:

• JAMB 2002

An electric iron is rated 1000W, 230V. What is the resistance of its elements?

A. 51.9Ω
B. 52.9Ω
C. 55.9Ω
D. 57.6Ω

Question 34:

• JAMB 2002

The electric field between two - point charges is shown in the diagram above. What types of charges are at X and Y?

A. Both X and Y are negative
B. Both X and Y are positive
C. X is positive and Y is negative
D. X is negative and Y is positive

Question 35:

• JAMB 2002

The electromagnetic wave that can produce a heating effect on the environment is

A. X -rays
B. Ultraviolet rays
C. Infrared rays
D. Gamma rays