What is the nature of image formed by a concave mirror if the magnification produced by the mirror (a) +4, and (b) −2?

(a) The nature of the image formed by a concave mirror, with a magnification of $+4$, is virtual and erect because the magnification has a plus sign.

(b) The nature of the image formed by a concave mirror, with a magnification of $-2$, is real and inverted because the magnification has a minus sign.

Explanation

In a concave mirror, if the height of the object and the image is above the principal axis, then it implies that the image is virtual and erect, and its magnification will always be positive.

On the other hand, if the height of the object is above the principal axis and the height of the image is below it, then it implies that the image is real and inverted, and its magnification will always be negative.

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Updated on: 10-Oct-2022

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