An object is placed 12 cm from a convex lens of focal length 10 cm. How far from the lens is the real image formed?

Answer and explanation

Correct answer: D. 60 cm

  1. Step 1: Lens formula: .
  2. Step 2: .
  3. Step 3: cm.
Answer
60 cm.
Why not the others: 2 cm: it subtracts the focal length from the object distance. 22 cm: it adds the distances. 60/11 cm: it uses instead of .

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