Sight defects and their corrections - Jamb Physics Past Questions and Answers

Question 1:

• JAMB 2019

If the time of flight is 96seconds, calculate the horizontal range through the point of projection.

A. 84400m
B. 69000m
C. 61440m
D. 24000m

Question 2:

• JAMB 1983

Which of the following statements about defects of vision is/are CORRECT? i. for a long sighted person, close objects appear blurred. ii. for a short sighted person, distant objects appear blurred. iii. short sight is corrected by using a pair of converging lenses.

A. I only
B. Ii only
C. I and ii only
D. Ii and iii only
E. I, ii and iii

Question 3:

• JAMB 1984

For correcting long sight defects in the human eye we require a

A. Converging lens
B. Diverging lens
C. Microscope
D. Periscope
E. Plain glass sheet

Question 4:

• JAMB 1990

For a short sighted person, light rays from a point on a very distant object is focused

A. In front of the retina
B. On the retina by a converging lens
C. Behind the retina by a diverging lens
D. In front of the retina, a distance 2F from the lens

Question 5:

• JAMB 1992

Which of the following statements is CORRECT about a long-sighted boy who does not put on glasses?

A. He cannot see distant objects clearly
B. Rays of light from a close object are focused in front of his retina
C. His eye ball is too long
D. Parallel rays of light are focused behind his retina