Question

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●Why magnification is taken negative for real images and positive for virtual images?​

Answer 1

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Magnification is the ratio between the height of the object and the height of the image.

In the case of a real image, the height of the object carries a positive sign while the height of the image carries a negative one.

Hence the magnification is negative.

In case of a virtual image, the height of the image, as well as the height of the object, carries a positive sign.

Therefore, the magnification is positive in this case.

Answer 2

Answer:

In the case of a real image, the height of the object carries a positive sign while the height of the image carries a negative one. Hence the magnification is negative. In case of a virtual image, the height of the image, as well as the height of the object, carries a positive sign.