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12th Class Physics Ray Optics Question Bank Case Based (MCQs) - Ray Optics and Optical Instruments

  • question_answer
    The critical angle for a diamond is \[{{24.4}^{o}}\]. Then its refractive index is:

    A) 2.42

    B) 0.413

    C) 1

    D) 1.413

    Correct Answer: A

    Solution :

    Option [a] is correct
    Explanation: Refractive index = 1/ sin C       
    C = critical angle = 24.4                      
    \[\therefore \] µ = 1/sin 24.4 = 1/0.4131 = 2.42             


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