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  5. Light - Reflection and Refraction

10th Class Science Light - Reflection and Refraction Question Bank Light

  • question_answer
    The angle between the incidental ray and the reflected ray from a plane mirror is \[60{}^\circ \]. Through what angle is the reflected ray deviate with respect to the incident ray?

    A)  \[150{}^\circ \]

    B)         \[120{}^\circ \]  

    C) \[90{}^\circ \]

    D)        \[60{}^\circ \]

    Correct Answer: B

    Solution :

                    \[i+r={{60}^{o}}\] For mirrors,        \[i=r\] So,          \[i={{30}^{o}}\] \[\therefore \]  \[\delta =180-2i={{120}^{o}}\]


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