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A 2 cm high object is placed on the prin...

A 2 cm high object is placed on the principal axis of a concave mirror at a distance of 12 cm from the pole.If the time image is inverted, real and 5 cm high, find the focal length of mirror.If the object starts moving at a speed of 1.2 cm/s toward the mirror find speed of image and its direction of motion
[7.5 cm/s]

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