Question

© Draw the diagram of a concave
mixos, pointing Radius of cuxvolume
and principal axis​

Answer 1

Answer:

radius of curvature: gap between pole and focus is called radius of curvature

R=2f

principal axis: an imaginary line which passes through centre of curvature and pole is squad principal axis

Answer 2

Answer:

your answer is here buddy...

refer the attachment for the diagram...