Light from an object proceeds through 3 lenses, each with magnification 2, -4, 0.2 respectively. The overall magnification is
A) +8/5.
B) 2 x (-4) × 0.2 = -1.6.
C) +5/8.
D) 2 - 4 + 0.2 = -1.8.
E) 2/(-4)/0.2 = -2.5.

Question

Quizplus · Accepted Answer

The overall magnification of a system of lenses is the product of the magnifications of the individual lenses. Therefore, the overall magnification is 2 * (-4) * 0.2 = -1.6.

Light from an Object Proceeds Through 3 Lenses, Each with Magnification