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  4. An object is placed 12 cm to the left of a converging lens of focal length 8 cm. Another converging lens of 6 cm focal length is placed at a distance of 30 cm to the right of the first lens. The second lens will produce

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Q. An object is placed 12 cm to the left of a converging lens of focal length 8 cm. Another converging lens of 6 cm focal length is placed at a distance of 30 cm to the right of the first lens. The second lens will produce

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Solution:

$\text { For lens }(1) \frac{1}{f}=\frac{1}{v}-\frac{1}{u} \Rightarrow \frac{1}{(+8)}=\frac{1}{v}-\frac{1}{(-12)}$
$\Rightarrow \, v = 24 \,cm$