combi

2 lens 1 convex of focal length 50cm & anoder concave of focal len 75 cm r kept in contact den wat will b d nature of combination?

5 Answers

1/50-1/75
=3-2/150
=1/150

so f=150cm

so its converging

use P=P1+p2
where P denotes the power

d ans is given dat it bhaves as a glass slab

then they both must have same focal length...sign opposite

i agree with abhi

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