Q: The legs of a sphere meter are 5 cm apart. There are 10 divisions cm^{-1} on linear scale and circular scale has 100 divisions. The height h of a convex mirror measured with the spherometer is 2 MSD + 37 circular scale division. find radius of curvature of convex mirror

(a) 20.003 cm

(b) 17.983 cm

(c) 18.399 cm

(d) 17.689 cm

Ans: (d)