- #1

Suraj M

Gold Member

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## Homework Statement

An object is placed 21 cm in front of a concave mirror of radius of curvature of 10 cm. A glass slab of thickness 3 cm and RI =1.5; is then placed close to the mirror. Find the position of the final image.

Take distance of closer side of block as 1 cm from the mirror.

## Homework Equations

##\frac{1}{f}= \frac{1}{u} + \frac{1}{v}##

u is the object dist. and v is the image dist.

##lateral~ shift~=~t\frac{\sin(i-r)}{\cos(r)}##

## The Attempt at a Solution

Ignoring the block i get ##v = -6.56 cm##

I don't know how to consider the block... i tried this..

i need the length of B'B'₂

I have the measure of a perpendicular drawn from A' to the line through A'₂ which was suppose to go through the focus..

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