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    • Question

      Two lenses of powers +2.0 D and –2.5 D are combined to

      make an optical instrument. The combination will
      A act as a convex lens Correct Answer Incorrect Answer
      B act as a concave lens Correct Answer Incorrect Answer
      C act as a simple mirror Correct Answer Incorrect Answer
      D not form any image Correct Answer Incorrect Answer

      Solution

      The correct answer is B

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