An object of size 5 cm is placed at 20 cm in front of a convex lense of focal length 15cm .At what distance from the lense should a screen be placed so that a sharp image can be obtained? Find the size and nature of the image ?
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here ur answer image will be magnified and real and inverted
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mondalankita57:
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is mondal ur surname?
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i heard that surname for first time
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