Question

A 12.0 cm object is 9.0 cm from a convex mirror that has a focal length of -4.5 cm. What is the distance of the image from the mirror?

Answer: -3 cm on EDGE

Answer 1

-3 cm

Step-by-step explanation:

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Answer 2

The distance of the image from the mirror, v = -3 cm

Step-by-step explanation:

Given data,

The object distance, u = 9 cm

The focal length of the convex mirror, f = - 4.5 cm

According to the mirror formula,

`(1)/(f)=(1)/(v)+(1)/(u)`

∴
`(1)/(v)=(1)/(f)-(1)/(u)`

`v=(uf)/(u-f)`

Substituting the values,

`v=((-4.5)*9)/(9+4.5)`

v = - 3 cm

Hence, the distance of the image from the mirror, v = -3 cm