The image of a candle flame formed by a lens is obtained on a screen placed on the other side of the lens. According to new
The image of a candle flame formed by a lens is obtained on a screen placed on the other side of the lens. According to new cartesian sign convention, if the image is three times the size of the flame, then the lens is :
(a) Concave and magnification is +3
(b) Concave and magnification is -3
(c) Convex and magnification is -3
(d) Convex and magnification is +3
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Correct answer is (c) Convex and magnification is -3
Image is other side of lens, only possible in covex lens. image is 3 times is possible and real. therefore, magnification is negative.
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