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Describe image formation by a concave mirror in different cases |
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Answer» tion:If a hollow sphere is cut into parts and the OUTER surface of the cut part is painted. Then it becomes a mirror with its INNER surface as the reflecting surface This kind of mirror is known as a concave mirror. Light converges at a point when it strikes and reflects back from the reflecting surface of the concave mirror. Hence, it is also known as a converging mirror. When the concave mirror is placed very CLOSE to the object, a magnified and virtual image is obtained. But if we increase the DISTANCE between the object and the mirror then the size of the image reduces and a real image is FORMED. So the image formed by the concave mirror can be small or large and it can also be real or virtual. |
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