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A thin hollow equiconvex lens, silvered at the back, converges a beam of light parallel to the principal axis at a distance 0.2 m . When filled with water ( = 4 3 ) , the same beam will be converged at a distance of

Options

  1. A0.40 m.
  2. B0.20 m.
  3. C0.12 m.
  4. Dnone of the above

Correct answer

C. 0.12 m.

Step-by-step solution

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