Question

7.
The lense of power +1.0 D is
(a) Convex of focal length 1.0 cm
(c) Concave of focal length 1.0 cm
(b) Convex of focal length 1.0 m
(d) Concave of focal length 1.0m​

Answer 1

Answer:

b)convex lens of focal length 1.O m

hope it will help.