Question

Define conjugate foci in case of lens and for a lens ,the ratio of length of object to the length of image is 1:4 find the relationship between u & v​

Answer 1

Answer:

Explanation:

=> conjugate focal points  are the object points and the image points which is formed by the lens system.

=> Here, it is given that the ratio of length of object to the length of image is 1:4  

length of object or Object distance = u

length of image or  image distance = v

now, the relationship between u and v:

u : v = 1 : 4

that means the image distance is four times the object distance.