Reflection of Light at Plane and Curved Surfaces - Jamb Physics Past Questions and Answers

Question 56:

• JAMB 2000

Total internal reflection occurs when light moves from

A. A dense medium to a less dense medium
B. Air to water
C. Water to glass
D. A less dense to a dense medium

Question 57:

• JAMB 2000

A projection lantern is used to give the image of a slide on a screen. If the image is 24 times as large as the slide and the screen is 72.0m from the projecting lens, what is the position of the slide from the lens?

A. 0.3m
B. 3.0m
C. 3.5m
D. 4.0m

Question 58:

• JAMB 2000

An engineer intends to deviate a light ray from its path by 120^o through reflection from a plane mirror. Calculate the angle of incidence

A. 60^o
B. 40^o
C. 30^o
D. 20^o

Question 59:

• JAMB 2001

A ray of light strikes a plane mirror at an angle of incidence of 35°. If the mirror is rotated through 10°, through what angle is the reflected ray rotated?

A. 70°
B. 45°
C. 25°
D. 20°

Question 60:

• JAMB 2001

The driving mirror of a car has a radius of curvature of 1m. A vehicle behind the car is 4m from the mirror. Find the image distance behind the mirror.

A. 8/7
B. 4/9
C. 9/2
D. 4/7