## GBS Physics Resources

The Physics Classroom

# Henderson's Physics 163

### Chapter 17 Opening Questions

Friday, April 25:

Monday, April 28:

1. A light ray approaches a mirror, making an angle of 20 degrees with the mirror surface. What is the angle of reflection? _______ Explain your answer.

2. An object is placed 50 cm from a plane mirror. How far is the image from the object? _______ Explain your answer.

Tuesday, April 29:

1. A microscopic view of a sheet of paper is shown in the diagram at the right. Would you expect this sheet of paper to cause light to undergo specular or diffuse reflection? ____________ Explain.

2. What do you suppose would be an easier surface to read - from pages of a book which are rough or from pages which are smooth and glossy? _________________________ Explain your answer.

Wednesday, April 30:

A 6-foot tall man is viewing himself in front of a plane mirror. How much of the mirror does he need to view his image? Does the amount depend upon his distance from the mirror? Explain your answer.

Thursday, May 1:

Rose Inhatt stands 0.9 m in front of a dresser mirror (labeled M2) with her hat on. She holds a hand mirror (labeled M1) a distance of 0.6 m behind her in an effort to view the image of a flower on the back of her hat. By looking in M2, she is able to view multiple images - primary, secondary, tertiary, etc. Determine the distances (relative to mirror M2) of the nearest three images which could be seen in M2.

Friday, May 2:

Where in front of a concave mirror must an object be placed in order for its image to be ...

a. ... located in front of the mirror?

b. ... located behind the mirror?

c. ... inverted?

d. ... inverted and magnified?

e. ... the same size as the object?

f. ... non-existent?

Tuesday, May 6:

The two diagrams below show a concave mirror, principal axis and arrow object. The focal point and center of curvature are marked (but not labeled). For each situation, draw a ray diagram and determine the image location. Based on your ray construction, indicate the magnification.

Wednesday, May 7:

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