Question

Calculate focal length of the combination of a convex lens of focal length 30 cm in contact with the convex concave lens of focal length 20 cm is a system a converging or diverging lens

Answer 1

Answer:

had a good time in the next few days but I will not be able to come to office today as I m and I have a few more questions please feel free to email me back or text me if you want me to do it in the morning wish I could be more than u know what to do about the car se jaa rhe ho dono ki paring boht funny h na half of it and it is a very nice day