Question

If a convex lens of focal length 100 cm and a concave lens of focal length 50 cm are combined together, what will be their resulting power,​

Answer 1

Explanation:

P1=1.25DandP2=−2DPnet=P1+P2=−0.75D

Answer 2

Answer:

D

Explanation:

If a convex lens of focal length 100 cm and a concave lens of focal length 50 cm are combined together, what will be their resulting power,