Question

if the distance between centre of curvature and Pole is 4m then what is the distance between the principal focus and centre of curvature is

Answer 1

R = 4m (Given)

f = R/2

So, f = 2m

Hope it helps.

Answer 2

distance between focus and center will be half of distance between pole and center. that is, 2 m.

Hope this helps! vote!:))