An object of height 6 cm is placed perpendicular to the principal axis at a distance of 15 cm from a concave mirror of focal length 10 cm. The position and image size is:
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inverted image of 3 cm height at 15 cm from mirror. But if object is kept at 20cm from mirror or at 2F distance , image size would be 6cm inverted at 20cm from mirror. ?
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