Physics-
General
Easy
Question
If an object is placed at A (OA>f); Where f is the focal length of the lens the image is found to be formed at B. A perpendicular is erected at o and C is chosen on it such that the angle 
is a right angle. Then the value of f will be
- AB/OC2
- (AC)(BC)/OC
- OC2 /AB
- (OC)(AB)/AC+BC
The correct answer is: OC2 /AB
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