In the situation shown, slab is close to the lens. The distance between the lens and the mirror so that final image of object is formed on object itself may be.
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The distance between lens and mirror is shown with the assumption when the image formed on itself.
- Let R be the distance at which the image formed.
- μ be the refractive index
- H be the height.
- Let d be distance at which the lens and mirror image formed at itself.
- Now derive relation
- μ(d) + h= R
- d=(R-H)/μ
- if H<<R
- then d=R/μ
- That is the relation
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