a meter scale is placed along the axis of convex mirror of focal length 25cm.its nearer and being at a distance of 50cm. calculate the size of image formed
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The mirrors formula:
1/ f = 1/u + 1/v
Now :
v = 50 cm
f = 25 cm
1 / 25 = 1 / 50 + 1 / u
1 / u = 1 / 25 - 1/ 50
1 / u = 1 / 50
u = 50 cm
Magnification :
Image distance / object distance
50 / 50 = 1
Size of image :
1 meter × 1 = 1 meter
= 1 meter
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