2. Sample Papers
  3. 9th Class
  4. General Knowledge

9th Class General Knowledge Sample Paper General Knowledge Olympiad Model Test Paper-9

  • question_answer
    The power of a lens is measured in:

    A)  Lumen            

    B)  Aeon

    C)  Candela                       

    D)  Diopters

    E)  None of these

    Correct Answer: D

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