Ray optics



  • 0_1546352153364_IMG_20190101_194536.jpg
    Correct answer is 4
    Plz explain the reason



  • @urvashi
    When the distance between the object and a concave mirror is equal to twice the focal length, the image is real and the distance between the image and the concave mirror is equal to twice the focal length.

    The distance of both the object and image from the mirror is the same in such a situation.

    The minimum distance of the object and its real image from a concave mirror is zero and this occurs when the distance between the object and the mirror is equal to twice the focal length.

    0_1546352963212_fdfc0d4900dd4ebbd84b8a6213ba66c756af1d7dc06293.88909379Fig3c.jpg


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