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Two identical symmetric double convex lenses of focal length f are cut into two equal parts L₁, L₂ by A B plane and L₃, L₄ by X Y plane as shown in figure respectively. The ratio of focal lengths of lenses L₁ and L₃ is

Options

  1. A1:1
  2. B1:2
  3. C1:4
  4. D2:1

Correct answer

B. 1:2

Step-by-step solution

so f₁ f₃ =1: 2

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