Question

2.
Conventionally, all the distances p, q, f are
measured from
of the lens.
(A) Focus
(B) Optical centre
(C) Edges
(D) None of these
The image of an ohinct 5 mm length in anh​

Answer 1

Answer:

B) optical center

Explanation:

Conventionally, all the distances p, q, f are

measured by optical center