Pre-Lab: Thin Lens and Microscope Write the equation down for the thin lens. How

Question

Pre-Lab: Thin Lens and Microscope Write the equation down for the thin lens. How is this equation related to the lens maker equation, are any approximations made to reduce the lens maker equation to the thin lens equation? Discuss. When light enters and exits the lens, the rays are shown in the diagrams in the laboratory write up as bending. What phenomenon accounts for the bending of the light moving from air to glass and then again from glass to air? A water droplet can be used as a magnifier. Discuss your ideas as to why the water droplet can act like a lens.

Explanation / Answer

Thin Lens equation is given by -
(1/do) + (1/di) = 1/f

Where,
do = Object Distance,
di = Object Image,
f = Focal Length

Lens Maker Formula is Given by -
1/f =(n1 )[1 / R1 - 1/ R2 + (n1) *d / n*R1*R2]

Where,
f = Focal Length,
n = Index of refraction,
R1, R2 = radii of curvature of the two sides of the lens

Approximation for Thin Lenses -

The above equation can be greatly simplified if the lens thickness d is very small compared to R1 and R2. In that case, the thin lens approximation can then be made and the lensmaker's equation can be approximated as

1/f = (n - 1) * (1/R1 - 1/R2)
Where 1/f = (1/do) + (1/di)

Please post seperate question in seperate post

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