define conjugate foci and for lens, the ratio of length of object to the length of image is 1:4 find the relationship between u and v.
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Step-by-step explanation:
The object points and their respective image points formed by lens are known as conjugate focal points.
We have distances connecting these conjugate points to the optical center of the lens.
When the image is focused ,these distances are known as focal distances or conjugate foci.
Now to get the relationship between u and v we must first understand their meaning.
u = object distance
v = image distance
u : v = 1 : 4
From the ratio we see that the image distance is four times the object distance.
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