Pasco OS-8515C Basic Optics System Manuel d'utilisateur télécharger pdf (Page 13)

Model No. OS-8515C Experiment 3: Reflection

Experiment 3: Reflection

Purpose

In this experiment, you will study how rays are reflected from different types of mir-

rors. You will measure the focal length and determine the radius of curvature of a con-

cave mirror and a convex mirror.

Part 1: Plane Mirror

Procedure

1. Place the light source in ray-box mode on a blank sheet of

white paper. Turn the wheel to select a single ray.

2. Place the mirror on the paper. Position the plane (flat) surface

of the mirror in the path of the incident ray at an angle that

allows you to clearly see the incident and reflected rays.

3. On the paper, trace and label the surface of the plane mirror

and the incident and reflected rays. Indicate the incoming and

the outgoing rays with arrows in the appropriate directions.

4. Remove the light source and mirror from the paper. On the

paper, draw the normal to the surface (as in Figure 3.1).

5. Measure the angle of incidence and the angle of reflection. Measure these angles

from the normal. Record the angles in the first row Table 3.1.

6. Repeat steps 1–5 with a different angle of incidence. Repeat the procedure again

to complete Table 3.1 with three different angles of incidence.

7. Turn the wheel on the light source to select the three primary color rays. Shine

the colored rays at an angle to the plane mirror. Mark the position of the surface

of the plane mirror and trace the incident and reflected rays. Indicate the colors of

Required Equipment from Basic Optics System

Light Source

Mirror from Ray Optics Kit

Other Required Equipment

Drawing compass

Protractor

Metric ruler

White paper

Table 3.1: Plane Mirror Results

Angle of Incidence Angle of Reflection

Incident ray

Normal to

surface

Reflected ray

Figure 3.1

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 70 71

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Pasco OS-8515C Basic Optics System Manuel d'utilisateur Page 13