A light bulb is placed 20 cm in front of a concave mirror with a focal length of 8 cm. How far from the mirror will the image of the light bulb be focused? Show your work:

13.3 cm

Explanation:

Mirrors work using the principle of refraction.

We can solve this problem by using the mirror equation:

where

f is the focal length of the mirror

p is the distance of the object from the mirror

q is the distance of the image from the mirror

In this problem, we have:

f = 8 cm is the focal length

p = 20 cm is the distance of the light bulb from the mirror

Solving for q, we find the distance of the image from the mirror:

they should be similar or the same

it would be kevlar ^^