# Question 3bca9

May 8, 2017

$f = 0.1 \text{ m" or 10" cm}$

#### Explanation:

The power of the lens is measure in diopters and is calculated as follows:

color(white)(aaaaaaaaaaaaaaaa)color(orange)(P = 1/f#

Where
$f = \text{the focal length} \left(m\right)$

To find the focal length, we would first rearrange the equation to get $\text{f}$ by itself,

• $P = \frac{1}{f}$

• $f = \frac{1}{P}$

now, plugin

• $f = \frac{1}{10}$

• $f = 0.1 \text{ m" or 10" cm}$

$\textcolor{b l u e}{\text{Answer": "focal length" = 0.1" m" or 10" cm}}$