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An object is placed at A(OA gt f). Here,...

An object is placed at `A(OA gt f)`. Here, f is the focal length of the lens. The image is formed at B. A perpendicular is erected at O and C is chosen such that `/_BCA = 90^(@)`. Let OA = a, OB = b and OC = c. Then the value of f is

A

`((a+b)^(3))/(c^(2))`

B

`((a+b)c)/((a+c))`

C

`(c^(2))/(a+b)`

D

`(a^(2))/(a+b+c)`

Text Solution

Verified by Experts

The correct Answer is:
C
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