2. Questions Bank
  3. 8th Class
  4. Science
  5. Chemical Effects of Electric Current

8th Class Science Chemical Effects of Electric Current Question Bank Chemical Effects of Current and Light

  • question_answer
    _____ is an apparatus used to produce a thin beam of light.

    A) Microscope                    

    B) Telescope

    C) Ray-box           

    D) Pin-hole camera

    E) None of these

    Correct Answer: C

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