Question

Find the power of a lens of focal length 0.20m.

Answer 1

Answer:

Given f1=0.20m,f2=0.30m. ∴f=0.12m. Power of the first lens P1=1f1=10.20=5D. Power of the second lens P2=1f2=10.30=3.333D.

Explanation:

please mark a BRAINLLE

Answer 2

Answer:

F1=0.20m, f2=0.30m.

f=0.12m. power of the first lens p1=1f1=10.20.=5D .

power of the second lens

Explanation:

p2=1 f2=10.30=333D.