Question

A convex lens produces a magnification of-3 for an object placed at 1.5 m from the leas. Find the image distance (with correct sign).

• A. -4.5 m
• B. -0.5 m
• C. 0.5 m
• D. 4.5 m

Answer 1

Answer:

D. 4.5 m

• Magnification (m) = -3 Object distance (u) = 1.5 m m = v/u -3 = v/1.5 v = 4.5 m