Question

I have asked the question yesterday that to derive mirror formula but yet no body has answered. When someone writes something bad that time all the people answers immediately but from yesterday onwards not a single person has answered me . So it is a humble request from my side that please give answer

Answer 1

mirror formla is 1/f =1/v+1/u
where f is force
u is distance
v is image

Answer 2

Answer:

R=CF+FP. In other words, in the small-angle approximation, the focal length f of a concave spherical mirror is half of its radius of curvature, R: f=R2.