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  5. Light - Reflection and Refraction

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

  • question_answer
    PQRS shows the walls of room each measuring 8 m, such that wall PO has a full length plane mirror. A camera is placed at M the mid point of wall SR. In order to take clear image of the point R, the camera should be focused at

    A) 4 m                              

    B) 8 m                

    C) 16 m                

    D)        More than 16 metres

    Correct Answer: D

    Solution :

    Perpendicularly the image of R is 8 m behind the mirror (say R'). However, with respect to camera at M, it is the diagonal distance (MR'), which is more than 16 m.


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