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A concave mirror forms a real image of a...

A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find the focal length of mirror.

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To solve the problem step by step, we will follow the principles of optics related to concave mirrors. ### Step 1: Identify Given Data - The distance of the object from the mirror (u) = -30 cm (the negative sign indicates that the object is in front of the mirror). - The size of the image is three times the size of the object, which means the magnification (m) = -3 (the negative sign indicates that the image is inverted). ### Step 2: Use the Magnification Formula The magnification (m) is given by the formula: ...
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