# An Object 20 Cm from a Spherical Mirror Gives Rise to Virtual Image 15 Cm Behind the Mirror. Determine the Magnification of the Image and the Type of Mirror Used. - Science

An object 20 cm from a spherical mirror gives rise to virtual image 15 cm behind the mirror. Determine the magnification of the image and the type of mirror used.

#### Solution

Given,
The distance of the object 'u' = -20 cm
Distance of the virtual image 'v' = 15 cm
We have to find the magnification 'm'.
Using the magnification formula, we get
m=-v/u
m=(-15)/-20
m=0.75
Thus, the image is virtual, erect and smaller in size.
The mirror used here is convex, as it forms a smaller virtual image
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#### APPEARS IN

Lakhmir Singh Class 10 Physics (Science)
Chapter 4 Reflection of Light
Q 12 | Page 210