Question

If the radius of curvature of a convex mirror is 36 cm, what is its focal length?

Answer 1

Step 1: Given

The radius of curvature of a convex mirror, $R=36cm$

To find out, $focallenght\left(f\right)=?$

Step 2: Formula

$focallenght\left(f\right)=\frac{radiusofcurvature\left(R\right)}{2}$

Step 3:calculations:

putting values in the formula,

$focallenght\left(f\right)=\frac{radiusofcurvature\left(R\right)}{2}$

$f=\frac{36}{2}$

$f=18cm$

Therefore the focal length of the convex mirror with a radius of 36 cm will be 18 cm.