
The magnification produced by a concave mirrorA) is always more than oneB) is always less than oneC) is always equal to oneD) maybe less than or greater than one.
Answer
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Hint: The ratio of the height of the image to the height of the object is termed as Magnification. The concave mirrors produce virtual or real, erect or inverted, diminished or the same size depending on the position of the object placed.
Complete step by step answer:
Note:
Complete step by step answer:
The expression for magnification is given as,
Where is the height of the object and is the height of the image. And , can have negative or positive according to the Cartesian sign convention.
When the image and the object have the same size the magnification will be one. If the image is diminished the magnification will be greater than one. If the image is enlarged the magnification will be less than one. The negative sign indicates that the image is real and the positive indicates that the image is virtual.
In a concave mirror, when the distance of the object is less than the focal length, the magnification will be greater than one. When the distance of the object is greater than the focal length, then the magnification is less than one.
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