Suppose you want to observe an erect image of a candle flame using concave mirror of focal length 20cm. Find the range of object distance. Nature of image formed and draw the ray diagram
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Answer:
we know that concave mirror produces erect image only in one case : when the object is placed between the pole and focus.
therefore object distance (u) < 20 CM.
refer ncert text for diagram.
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Explanation:
Object distance should be less than the focal length for the formation of an erect image. Hence, the range of distance of object from the mirror should be less than 15 cm i.e. from 0 to 15 cm in the front of mirror from the pole. The nature of image so formed will be virtual and erect.
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