Question

Magnification of plane mirror is M equal to plus one what does M equal to 1 and positive sign signify ?


answer =The magnification M equal to one shows that image is exactly of the same size as that of the object while Plus sign indicates that the image is virtual and erect.

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Answer 1

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Answer 2

The magnification equal to 1 indicates that the size of the image obtained will be equal to the size of the object.

That is they will have the perfectly same size.

This is a property of plane mirrors .

The positive sign indicates that the image will be erect in position and will be virtual in nature.

The significance of the positive sign is in indicating the image formed is erect.