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Question

Physics Question on Ray optics and optical instruments

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

A

no image

B

a virtual enlarged image

C

a real enlarged image

D

real inverted image

Answer

a real enlarged image

Explanation

Solution

The correct answer is C:a real enlarged image
 For lens (1)1f=1v1u1(+8)=1v1(12)\text { For lens }(1) \frac{1}{f}=\frac{1}{v}-\frac{1}{u} \Rightarrow \frac{1}{(+8)}=\frac{1}{v}-\frac{1}{(-12)}
v=24cm\Rightarrow\, v = 24 \,cm