Question

In the graphs that follow, a curve is drawn in the first graph of each pair. For the other graph in each pair, sketch the curve showing the relationship between the quantities labeled on the axes. Your graph should be consistent with the first graph in the pair.

(a) di = Image Distance (positive to right of lens) for a Thin Convex (converging) Lens of focal Length f

Answer 1

(a)Based on 1/f = 1/do + 1/di

Rearrange for y as function of x (make f – since concave)1/di = (–1/f) + (–1/do) .. the focal point term is negative and constant so …

As do increases the 1/do term decreases adding less and less – values to the right side of the equation. When do gets very large the right side becomes constant.