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An object is present on the principal ax...

An object is present on the principal axis of a concave mirror at a distance 30cm from it. Focal length of mirror is 20cm.

Q. Image formed by mirror is

A

At a distance of 60cm in front of mirror

B

At a distance 60cm behind the mirror

C

At a distance 12 cm in front of mirror

D

At a distance 12cm behind the mirror

Text Solution

Verified by Experts

The correct Answer is:
a.
`(1)/(v)+(1)/(u)=(1)/(f)`
`rArr(1)/(v)+(1)/(-30)=(1)/(-20)rArrv=-60cm`
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