Question

State the meaning of magnification in spherical mirrors. How is it related to object distance and image distance? When is magnification positive or negative?​

Answer 1

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• Magnification is the increase in the image size produced by spherical mirrors with respect to the object size. It is the ratio of the height of the image to the height of the object and is denoted as m.
• The magnification, m, is defined as the ratio of the image height to the object height, which is closely related to the ratio of the image distance to the object distance: A magnification of 1 (plus or minus) means that the image is the same size as the object.
• The magnification of the actual image will always be negative and the virtual image should always be positive.

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Answer 2

Answer:

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Explanation:

The magnification, m produced by a spherical mirror can be expressed as: m=h′h where h′ is height of image and h is height of object. It is also equal to the negative of the ratio of the image distance(v) to object distance (u). According to convention object distance is always negative