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    Question

    In mirrors the back surface is coated with a thin layer

    of
    A Mercury Correct Answer Incorrect Answer
    B Silver Correct Answer Incorrect Answer
    C Red oxide Correct Answer Incorrect Answer
    D Silver nitrate Correct Answer Incorrect Answer

    Solution

    In a spherical mirror, one of the twocurvedsurfacesiscoatedwithathinlayerof silver followed by a coating of red lead oxide paint. Thus, one side of the spherical minor is opaque and the other side is a highly polished reflecting surface.

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