2 questions very simple physics 2 class will rate 1 if a sp
2 questions, very simple physics 2 class, will rate -
 1) if a spherical concave mirror has a radius of curvature R, it\'s focal length is
 A) R/4
 B) R/2
 C) R
 D) 2R
 E) 4R
 2) if a spherical convex mirror has a radius of curvature R, the magnitude of its focal length is
 A) R/2
 B) R/4
 C) R
 D) 2R
 E) 4R
 Solution
1) B) R/2
Spherical mirror has a radius of curvature R and a focal length f = R/2
2) A) R/2
2/R = 1/f

