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

  • question_answer
    A ray in incident on normal glass and "negative glass" at an angle \[{{60}^{o}}\]. If the magnitude of angle of refraction in normal glass is \[{{45}^{o}}\] then, what will be the magnitude of angle of refraction in the "negative glass"?                                

    A) Less than \[{{45}^{o}}\]

    B) More than \[{{45}^{o}}\]

    C) \[{{45}^{o}}\]

    D) Unpredictable       

    Correct Answer: C

    Solution :

    Option is [c] correct. Explanation: The magnitude of angle of refraction in normal "negative glass" will also be \[{{45}^{o}}\], but the direction of the retracted light ray is 'mirror-imaged' about the normal to the surface.


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