Newton's Formula for Thick Lenses

Physics

formula

Calculate Newton's formula for thick lenses

If the distance of object and image are not measured from optical centre (C), but from first and second principal foci respectively, then newtons formula states

where,
= distance of object from first focus .
= distance of image from second focus 
If medium on either side of lens is same, then

So, Newtons formula takes the form,


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