A thin rectangular silver sheet acts as a plane mirror. A person who can see his face in it, hold it vertically, such that the length of the sheet is perpendicular to the ground. How does this image in the silver sheet change if the sheet is bent in a semi-circular way.

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Solution

Dear Student,

On bending the sheet two cases can be classified

(a) Sheet act as a concave mirror: If the sheet curved inside with respect to the person, i.e. it appears as a concave mirror. So, the image of the person will be inverted.

Disclaimer: The nature of image depends upon the distance of the person from the sheet.

(b) Sheet act as a convex mirror: If the sheet curved outside with respect to the person, i.e. it appears as a convex mirror. So, the image of the person will be erect.

Regards

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