An object is placed 12cm before a concave mirror of focal length 6 cm find the position of image by using mirror formula.
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f= -9cm, v= -6cm. The focal length of a concave mirror can be estimated by focusing a distant object on a screen. Parallel rays from a distant object converge at the focal plane of the mirror. The distance between the mirror and the screen is the estimated focal length of the concave mirror.
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