Question

    A plane mirror is placed on a wall. A man walks directly

    toward the mirror at 2 m/s. The speed at which his image approaches him is:
    A 2 m/s Correct Answer Incorrect Answer
    B 1 m/s Correct Answer Incorrect Answer
    C 3 m/s Correct Answer Incorrect Answer
    D 4 m/s Correct Answer Incorrect Answer

    Solution

    In plane mirrors, the image appears the same distance behind the mirror as the object is in front. When the man moves at 2 m/s toward the mirror, the image moves 2 m/s toward him from the opposite side. So, the relative speed between man and image is 2 + 2 = 4 m/s.

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