Question

The power of lens is 2. 5D. What kind of lens it is and what is its focal length
a) Convex lens, 40cm
b) Concave lens, 100cm
c) Convex lens, 50cm
d) Concave lens, 40cm
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Answer 1

b) concave lens ,40 cm is the correct answer

Answer 2

Answer:

Hello Brainly user.....!!♡

d) Concave lens, 40cm