If f1 and f2 are the distances from the optical centre of a convex lens of focal length to conjugate two points P1 and P2 respectively, the following relationship holds good

If f1 and f2 are the distances from the optical centre of a convex len

1.	If f1 and f2 are the distances from the optical centre of a convex lens of focal length to conjugate two points P1 and P2 respectively, the following relationship holds good
A.	f = f1 + f2
B.	f = ½ (f1 + f2)
C.	1/f = 1/f1 + 1/f2
D.	None of these
Answer» D. None of these