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Statement of a problem № 3996

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Let a glass sphere of radius r lie with its centre on the x-axis. A ray of light parallel to the x-axis will form an image on the other side of the sphere. Show that the distance of the image from the centre of the sphere will be equal to nr/2(n-1), where n is the refractive index of the glass.

Solution:
Let a glass sphere of radius r lie with its centre on the x-axis. A ray of light

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