Given below are four statements-(p) The second principal focus of a lens is the position of the object, real or virtual whose image is at infinity.(q) The second principal focus of a lens is the position of the image, real or virtual whose object is at infinity.(r) The first principal focus of a lens is the position of the object, real or virtual whose image is at infinity.(s) The first principal focus of a lens is the position of the image, real or virtual whose object is at infinity. Examine the above statements and find which among then are correct.

Given below are four statements-(p) The second principal focus of a le

1.	Given below are four statements-(p) The second principal focus of a lens is the position of the object, real or virtual whose image is at infinity.(q) The second principal focus of a lens is the position of the image, real or virtual whose object is at infinity.(r) The first principal focus of a lens is the position of the object, real or virtual whose image is at infinity.(s) The first principal focus of a lens is the position of the image, real or virtual whose object is at infinity. Examine the above statements and find which among then are correct.
A.	(q) & (r)
B.	(p) & (s)
C.	(q) & (s)
D.	(p) & (r)
Answer» B. (p) & (s)

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