Question

You are 2.4 from a plane mirror, and you would like to take a picture of yourself in the mirror. You need to manually adjust the focus of the camera by dialing in the distance to what you are photographing. What distance do you dial in?
A. 1.2 m
B. 2.4 m
C. 3.6 m
D. 4.8 m

Answer 1

Answer:

option (D)

Explanation:

your distance from the plane mirror = 2.4 m

According to the property of the plane mirror, the distance between the object and the mirror is equal to the distance between the image and the mirror.

So, the distance  between you and your image is two times the distance between you and mirror.

the distance between you and your image = 2 x 2.4 = 4.8 m