Four modifications are suggested in the lens formula to include the effect of the thickness t of the lens. Which one is likely to be correct?

Question

Philoid · Accepted Answer

We know the case of shift in the image due to thick slab. Remembering the cases,

,

As, t and v are small, it is ignored

SO, u’=u+t and v’=v-t. From, here we can easily tell about the answer.