A student performs an experiment on finding focal length of a convex lens by keeping a lighted candle on one end of laboratory table, a screen on its other end and the lens b/w them. The positions of three are adjusted to get a sharp image of candle flame on the screen.
If now the candle flame were to be replaced by a distant lamp on a far away electric pole, the student would be able to get a sharp image of this distant lamp on screen by moving :
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No need to move in both the case real inverted highly diminished image is formed ar f.
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A is the Answer...Hope it helps you
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