When an object is placed \( 20 \mathrm{~cm} \) from a concave mirror, a real image magnified thr... VIDEO
When an object is placed \( 20 \mathrm{~cm} \) from a concave mirror, a real image magnified three times is formed. Find :\( P_{W} \)(a) the focal length of the mirror.(b) Where must the object be placed to give a virtual image three times the height of the object?https://bit.ly/YTAI_PWAP https://www.pw.live
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