An object of height 2.5cm is places 20cm from a convex mi...
An object of height 2.5cm is places 20cm from a convex mirror of focal length 10cm. Calculate the height of its image.
2.5 cm
3.0cm
5.0cm
25.0cm
Correct answer is A
1v=1f−1u
= 110−12=120
v = 20
but hi = v×hou
= 20×2.520
= 2.5cm
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