Question

Vittorio needs to clean the dusty mirror hanging on the wall before he can use it, but he would like to clean as little of the mirror as possible.

Vittorio would like to be able to see the logo on his shirt. Draw the incident and reflected rays showing the light from the logo reflecting off the mirror into his eyes. The rays should meet at the point on the mirror that needs cleaning.

Adjust the existing vectors on the diagram, for the reflected (R) and incident (I) ray, starting and ending at the surface of the mirror respectively. The location and orientation of the vectors will be graded.

vector sum delete element attributes reset ? help R : reflected ray 9° Submit Hints My Answers Give Up Review Part

Vittorio would like to be able to check whether his shoelaces are tied. Draw the incident and reflected rays showing the light from his shoelaces reflecting off the mirror into his eyes. Again, the rays should meet at the point on the mirror that needs cleaning.

(See the hints from Part A if you need help.)

Adjust the existing vectors on the diagram, for the reflected (R) and incident (I) ray, starting and ending at the surface of the mirror respectively. The location and orientation of the vectors will be graded.

I would like to know how to precisely draw the vectors, because i keep getting the answer wrong.

Answer 1

Concepts and reason

The concepts used to solve the question is the reflection and laws of reflection.

Initially, draw the ray diagram showing light from the logo and shoelaces reflecting from the mirror into the eyes by using the concept of reflection.

Fundamentals

Reflection:

The process of the bouncing back of the light in the same medium is called a reflection.

Laws of reflection:

The laws of reflection are explained below:

1.The incident ray, the reflected ray and the normal all lie in the same plane

2.The angle of incidence is equal to the angle of reflection.

The ray diagram for the incident and reflected rays is drawn below.

From the above diagram, $r$ is the angle of reflection and $i$ is the angle of incidence.

The ray diagram for the incident and reflected rays is drawn below.

Ans:

The ray diagram showing light from the logo reflected from the mirror into the eyes is shown below.