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Two objects A and B when placed in turn ...

Two objects `A` and `B` when placed in turn in front of a concave mirror of radius of curvature `15cm`, give images of equal size. If `A` is three times the size of `B` and is placed `30cm` from the mirror, the distance of `B` from the mirror is

A

`20cm`

B

`15cm`

C

`12.5cm`

D

`9.5cm`

Text Solution

Verified by Experts

The correct Answer is:
B
`(M_(A))/(M_(B))=(1)/(3)=(f-u_(B))/(f)xx(f)/(f-u_(A))`
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