Question

Find the focal length of a convex mirror whose radius of curvature is 100 cm​

Answer 1

Answer:

50cm

Explanation:

We have

Radius of curvature,

R = 100cm

Radius of curvature = 2 x Focal length (f)

=> R = 2f

=> f = R/2

=> f = 100/2

=> f = 50cm

Answer 2

Answer:

$Focal \: length \: = \: \frac{Radius \: of \: curvature}{2} \\ or \: f = \frac{r}{2} \\ \\ f \: = \: \frac{100}{2} \\ \\ f = 50cm \\ \\ Thus, \: the \: focal \: length \: of \: convex \: mirror \: is \: 50cm.$