A converging mirror forms a real image of height 4 CM of an object height of 1 cm placed 20cm away from the mirror calculate the images distance and what is the focal length of the mirror
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Magnification m=u−v
−4=−20−v
v=−80cm
From mirror formula
v1+u1=f1
−801+−201=f1
f1=−801+4
f=−16cm
Thus focal length of converging mirror is 16 cm.
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