Physics, asked by sabiha3482, 30 days ago

with the help of a ray diagram show that focal length of abconvex mirror is positive while that of concave mirror is negative

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Answered by mayankdaiya23

Answer:

By obtaining the Real image of a distant object at its focus, the focal length of the concave mirror can be estimated as shown in the diagram. The focal length of the convex mirror is positive, whereas that of the concave mirror is negative. The same can also be proved by using the mirror formula: (1/f = 1/v +1/u).

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