Answer and Explanation:
The computation of the object distance related to two quantities is shown below:
It could find out by using the lens formula which is shown below:
![(1)/(v) - (1)/(u) = (1)/(f)](https://img.qammunity.org/2021/formulas/physics/college/572303f1dp40dgjydh91hvqc6af1skf6n6.png)
where,
v = image distance
u = object distance
f = focal length
It could be found by applying the above formula i.e considering the image distance, object distance and the focal length