Find the focal length of concave mirror, whose focus is situated behind the mirror
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Answer:
the focus of mirror is not situated behind the mirror ever.
if it will be then,
the focal length of mirror will be positive
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The distance between the pole P of the concave mirror and the focus F is the focal length of the concave mirror. Thus, the focal length of a concave mirror can be estimated by obtaining a 'Real image' of a distant object at its focus, as shown in the figure.
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