An upright image in a convex lens is magnified 3 times. If the focal length of the lens is 30 cm, wh

JAMB Physics 2023 57 views
Source: JAMB · 2023

An upright image in a convex lens is magnified 3 times. If the focal length of the lens is 30 cm, what is the object distance?

  1. 20 cm ✓
  2. 40 cm
  3. 10 cm
  4. 30 cm

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