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A convex mirror forms a real image 5 tim...

A convex mirror forms a real image `5` times the size of the object placed at a distance of `20`cm from it. The radius of curvature of the mirror is

A

`(100)/(3)cm`

B

`(50)/(3)cm`

C

`100cm`

D

`50cm`

Text Solution

Verified by Experts

The correct Answer is:
A
`M=(-v)/(u)=-5`
`u=-20cm`, `v=-100cm`,
`(1)/(f)=(1)/(u)+(1)/(v)`
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