P,Q,R and S are four points on the surface of a concave mirror as shown in the figure. If r_1,r_2,r_3 and r_4 are the distance of centre of curvature from points P,Q,R and S, respectively, then the correct relation between r_1,r_2,r_3 and r_4 is:

Correct option is B

From the figure provided, the distances r₁​, r₂​,r₃​, and r₄​ represent the distances of the center of curvature (C) from points P, Q, R, and S located on the concave mirror.

Explanation:

1. A concave mirror is a part of a sphere. The distance from the center of curvature (C) to any point on the surface of the mirror is the radius of curvature (R).
2. Since the concave mirror is a spherical mirror, all points on the reflective surface of the mirror lie at the same distance from the center of curvature (C).

Correct Relation:

r1=r2=r3=r4