a small candle of 2.5cm in size is placed 27 cm in front of concave mirror of radius of curvature 36 cm. at what distance from the mirror should a screen be placed in order to receive sharp image. if the candle is moved closer to the mirror how should the screen have to be moved
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distance of candle (u) = -27cm
radius of curvature = 36cm
so,
focal length=36÷2 = 18 cm
By mirror formula =1
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