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A mobile phone lies along the principal ...

A mobile phone lies along the principal axis of a concave mirror as shown in Fig. Show by suitable diagram, the formation of its image. Explain why the magnification is not uniform, and distortion will occur depending on the location of the mobile with respect to the mirror.

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The position of the image of different parts of the mobile phone depends on their position with respect to the mirror. The image of the part which is on the plane perpendicular to principal axis will be on the same plane. It will of the same size, i.e., B'C = BC. The images of the other parts of the phone are getting magnified in accordance with their object distance from the mirror.
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