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An object is placed at a distance of 10 ...

An object is placed at a distance of 10 cm from a convex lens of focal length 12 cm. Find the position and nature of the image.

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Maximum angular magnification is achieved when the fiN/Al image is formed at the near point. Thus, `v=-25cm. The focal length is `f=1/10 m=10 cm.`
We have
`1/v-1/u=1/f`
`or -1/(25cm)-1/u=1/(10cm)`
or `1/u=-1/(25cm)-1/(10cm)`
`or u=-50/7cm=-7.1cm`
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