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

Question 76:

• JAMB 2008

An object of heights 5 cm is placed at 20 cm from a concave mirror of focal length 10 cm. the image height is?

A. 20 cm
B. 15 cm
C. 10 cm
D. 5 cm

Question 77:

• JAMB 2008

Convex mirror 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 78:

• JAMB 2008

If a convex lens of focal length 12cm is used to produce a real image four times the size of the object, how far from the lens must the object be placed?

A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm

Question 79:

• JAMB 2009

An object is placed 5 cm from the pole of a concave mirror. if the focal length of the mirror is 10 cm. what is the image distance?

A. 10 cm in front of the mirror.
B. 5 cm in front of the mirror
C. 10 cm behind the mirror
D. 5 cm behind the mirror

Question 80:

• JAMB 2009

Calculate the position of an object placed in front of a convex mirror having focal length of 12 cm such that an image is formed 6 cm away from the mirror

A. 4. 0 cm
B. 3. 0 cm
C. 12.0 cm
D. 9.0 cm