what is the focal length of the mirror
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distance between pole and focus of mirror is known as focal length
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hi mate,
Answer : The focal length of an optical system is a measure of how strongly the system converges or diverges light; it is the inverse of the system's optical power.
A positive focal length indicates that a system converges light, while a negative focal length indicates that the system diverges light.
Definition: Focal length. Focal length. Focal length (shown in red) is the distance between the center of a convex lens or a concave mirror and the focal point of the lens or mirror — the point where parallel rays of light meet, or converge.
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