Question

A concave mirror produces four times magnified image of ab object placed at 10 cm in front of the mirror. find the position of image

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Answer 1

40 cm

Step-by-step explanation:

We are given that

Magnification of concave mirror, m=4

Object distance, u=-10cm

We have to find the position of image.

We know that

Magnification of concave mirror, m=
`-(v)/(u)`

Using the formula

`4=-(v)/(-10)`

`4=(v)/(10)`

`v=4* 10`

`v=40cm`

Hence, the image is formed at distance 40 cm behind the mirror.