Question

What is the focus distance of a combined lens made by combining
concave lens of 20 cm focus distance placed in contact with a convex
lens of 30 cm focus distance? Whether this combination is convergent
lens or divergent?​

Answer 1

Answer:

The correct answer is convergent .

ok

Explanation:

Because both of them are different quality of focusing one object from 25 cm and one from 20 cm .

Thank you .