a lens is placed between a lamp and a screen which are 18 cm apart, so that the image on the screen is three times as large as the lamp. the distance between the lamp and the lens is?
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A lens is placed between a lamp and a screen which are 18 cm apart, so that the image on the screen is three times as large as the lamp.
The distance between the lamp and the lens is?
Type of lens is not given in the question which makes the question confusing!
The distance between the lamp and the lens is?
Type of lens is not given in the question which makes the question confusing!
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