# A short object of

The length of the image is equal to .

Given:

The length of the object is = L, object distance is u and focal length = f. To find the length of the image we use the mirror equation. The Length of the object is Formula Used:

The mirror formula or mirror equation specifies the relation between the object and image distance to the focal length of the object. where

u is the object distance, v is the image distance and f is the focal length of the object put in the principal axis.

Explanation:

To find the length of the image that is v, we use Now separating the size of v with respect to the size of the object and focal length  Due to smaller length of the object ( ) let us differentiate the equation with respect to u and v.   Putting equation (2) in (1) we get Since  Therefore, the length of the image is equal to Rate this question :

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