Question

h = 6m
convex lens.
f = 25cm
u=-40cm
V=?​

Answer 1

answer is in the pic .

Hope it will help you

Answer 2

Answer:

5

Explanation:

1/v+1/u=1/f

therefore

1/v+1/20=1/25

1/v=1/25-1/20

1/v=5