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Two thin convex lenses are kept in contact coaxially. If the focal length of the combination of the lenses is 4 cm and sum of the focal lengths of the two lenses is 18 cm, then the focal length of the lens of low power is

Options

  1. A8 cm
  2. B10 cm
  3. C6 cm
  4. D12 cm

Correct answer

D. 12 cm

Step-by-step solution

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