Question

a girl stands 1.5 m in front of a plane mirror, what is the distance of her image,and what are four image characteristics

Answer 1

the distance to the image is 1.5 m

Step-by-step explanation:

To find the position of the image let's use the equation of the constructor

`(1)/(f) = (1)/(p) + (1)/(q)`

where p and q are the distance to the object and the image, respectively, and f is the focal length.

In this case a plane mirror has a focal length at infinity, if we substitute in the equation

1 / p = - 1 / q

q = -p

therefore the distance to the image is 1.5 m

this image has some characteristics:

* It is a virtual image, this means that light rays do not pass through it

* It is a right image, that is, the image is in the same direction of the object.

* the magnification is 1, since the height of the image and the object are the same

* has the right - left direction reversed