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

Question 61:

• JAMB 2002

To produce an enlarged and erect image with a concave mirror,the object must be positioned

A. At the principal focus
B. Beyond the centre of curvature
C. Between the principal focus and the centre of the curvature
D. Between the principal focus and the pole

Question 62:

• JAMB 2002

A concave mirror of radius of curvature 40 cm forms a real image twice as large as the object.
the object distance is

A. 10 cm
B. 30 cm
C. 40 cm
D. 60 cm

Question 63:

• JAMB 2002

a ray of light which strikes a glass slab from air at normal incidence passes through the slab

A. Undeviated and undisplaced at a lower speed
B. Deviated and undisplaced at a lower speed
C. Deviated and displaced at a lower speed
D. Undeviated and displaced at a faster speed

Question 64:

• JAMB 2003

By what factor will the size of an object placed 10cm from a convex lens be increased if the image is seen on a screen placed 25cm from the lens?

A. 15.0
B. 2.5
C. 1.5
D. 0.4

Question 65:

• JAMB 2003

If an object is placed between two parallel plane mirrors with their reflecting surfaces facing each other, how many images of the object will be formed?

A. Infinite
B. Eight
C. Four
D. Two