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    If object is placed at 25 cm in front of a concave mirror of focal length 15 cm, then find out the image distance v.
    Question

    If object is placed at 25 cm in front of a concave mirror of focal length 15 cm, then find out the image distance v.

    A.

    32.5 cm

    B.

    38 cm

    C.

    -32.5 cm

    D.

    -37.5 cm

    Correct option is D

    The correct answer is (D) -37.5 cm.

    Explanation:
    Using the mirror formula 1/f = 1/v + 1/u , where:

    f = -15 cm (focal length of concave mirror),
    u = -25 cm (object distance placed in front of the mirror).
    The calculated image distance (v) is -37.5 cm, indicating that the image is formed 37.5 cm in front of the mirror on the same side as the object.

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