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8th Class Science Light Question Bank Light

  • question_answer
    An optician holds a test card 50 cm behind a patient. The patient then looks in the plane mirror which is 100 cm away. How far away from the patient's eyes is the image of the test card?

    A) 100 cm

    B) 150 cm 

    C) 200 cm 

    D)        250 cm

    Correct Answer: D

    Solution :

    Object distance = 150 cm \[\therefore \]Image distance = 150 cm (as in plane mirror, object distance is always equal to the image distance) The patient is 100 cm away from the mirror. So, the distance between the patient's eyes and the image =100cm+150cm=250cm


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