a concave mirror has radius of curvature 20 cm.an object is place 30cm front of that mirror.caluclate the position of the image
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Using Real Is Positive convention — everything here is positive.
f = R/2 = 10 and u = 30
1/v + 1/u = 1/f
1/v = 1/f - 1/u = 1/10 - 1/30 = 3/30 - 1/30 = 2/30 = 1/15
So the image is real, 15 cm from the mirror, (midway between object and mirror)
Magnification (v/u) is + 1/2 meaning half size and inverted.
Explanation:
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