Question

Find the focal length (in cm) of lens of power 22 .1. identify the type of this lens?​

Answer 1

Answer:

convex lens have positive power

Explanation:

p=1/f

22=1/f

f=1/22diopter

Answer 2

Answer: lens used is convex lens

Explanation:

P = 1/f (in m)

22.1 = 1/f

f = 1 /22.1

f = 0.45 m (approx)

f = 45 cm (approx)

Hope it helps!!!