A 3-cm high object is in front of a thin lens.The object distance is 4 cm and the image distance is -8 cm.The image height is:
A)0.5 cm
B)1 cm
C)1.5 cm
D)6 cm
E)24 cm

Question

Quizplus · Accepted Answer

The magnification (m) of a lens is given by the formula m = - (image distance) / (object distance). Here, m = - (-8 cm) / (4 cm) = 2. The image height is the magnification times the object height: 2 * 3 cm = 6 cm.

A 3-Cm High Object Is in Front of a Thin