8th Class Science Light Question Bank Light Formative Objective Problems

  • question_answer
    When a light ray passes from one medium \[({{\mu }_{1}})\] to other medium \[({{\mu }_{2}})\]. Refraction does not take place in the following situation.

    A)  for normal incidence

    B)  \[{{\mu }_{1}}>{{\mu }_{2}}\]

    C)  \[{{\mu }_{1}}={{\mu }_{2}}\]           

    D)  \[{{\mu }_{1}}<{{\mu }_{2}}\]

    Correct Answer: A

    Solution :

      if\[i={{0}^{o}}\]then\[r={{0}^{o}};\]if\[{{\mu }_{1}}={{\mu }_{2}}\]then \[i=r\]


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