Law of Reflection

Diffused and Specular Reflection plus Mirror Images

Follow the directions for each part of the assignment. Answer the questions then upload this document in the appropriate dropbox.

Reflection Definitions:

http://www.schoolphysics.co.uk/animations/Light%20and%20optics%20animations/Reflection/index.html

Directions: Open the web site listed above and complete the questions/activity below:

Define the following:

Normal:

Angle of Incidence:

Angle of Reflection:

Incident Wave :

Reflected Wave :

State the Law of Reflection:

Simulation #1:

Open the following simulation and record your observations.

http://www.schoolphysics.co.uk/animations/Light%20and%20optics%20animations/Reflection/index.html

Click on the “start” button and observe the changes in the angles. Click the “pause” button to record the Angle of Incidence and the corresponding Angle of Reflection. Do this for three different incident angles and record in the data table.

Angle of Incidence / Angle of Reflection / Incident Wavelength

Was the law of reflection verified with this simulation? ______

Simulation #3: Reflection from a Concave Mirror

http://www3.nd.edu/~ysun/Yang/PhysicsAnimation/collection/images1P.swf

Click on one of the candles to locate its image. Observe the size of the real image produced by the mirror will change with changes in the distance between the candle and the mirror.

Describe the image produced by a concave mirror. Compare the image to the object.

(Discuss position, size, color, vertical orientation, etc.)

A reflected ray passes through a point F on the principle axis. What is the name of this point? ______

What was the position of the incident ray to the principle axis that produced this reflected ray through point F? ______

Why is this a real image? ______

Simulation #4: Virtual Image from a Concave Mirror

http://www3.nd.edu/~ysun/Yang/PhysicsAnimation/collection/images1P.swf

Click on the different candles to locate the virtual images formed. Describe the virtual image made by the concave mirror. (Discuss position, size, color, vertical orientation, etc.)

The object is located between point ___ and ____ to make a virtual image. The image is larger when the soldier is located closer to point ___. How is a virtual image different from a real Image?

Simulation #5: Convex Mirror Images

http://www3.nd.edu/~ysun/Yang/PhysicsAnimation/collection/images2P.swf

Click on the different candles to locate the different types of images formed.

The convex image is located ______the mirror. (in front of, behind)

The image is ______than the object. (larger, smaller, equal in size)

Describe other characteristics of the convex mirror image.

State the "virtual" path (path behind the mirror) for a incident ray from the object that travels:

a. parallel to the principle axis: ______

b. Toward the center of curvature (point C): ______

c. Draw a concave and convex mirror below. Label the principle axis, focal point, center of curvature and vertex (point P)