the focal length of a concave mirror is 30cm.whereshould an object be placed so that its image is there times magnified real and inverted
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F=-30cm and magnification (m)= -3 for real and inverted image magnification is negative then formula for this question is m= f/f-u then -3=-30/-30-u ,, 90+3u=-30 ,, -90-30=3u then u =-40cm
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A focal length of a concave mirror is 30 cm. Where should an object be placed so that its image is three times magnified, real and inverted ? So object should be placed at 40 cm to the mirror.
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