Question

1.center of sphere from which mirror is made is -----
a.pole
b.principal axis
c.centre of curvature
d.radius of curvature

2.in spherical mirror C, R, P respectively refers to
a. pole, radius of curvature, centre of curvature
b. pole, centre of curvature, radius of curvature
c. radius of curvature, centre of curvature, pole
d. centre of curvature, pole, radius of curvature
​

Answer 1

centre of curvature is the right answer

for 2nd question c is centre of curvature

r is radius of curvature

and pbis the pole