University:
College
Course:
College Physics
Academic year:

2022
Views:

479

Pages:

2
Author:

SpaceCadet101

Name Class Concept-Development Date Practice Page Reﬂection 1. Light from a ﬂashlight shines on a mirror and illuminates one of the cards. Draw the reﬂected beam to indicate the illuminated card. 2. A periscope has a pair of mirrors in it. Draw the light path from the object O to the eye of the observer. 3. The ray diagram below shows the extension of one of the reﬂected rays from the plane mirror. Complete the diagram by (1) carefully drawing the three other reﬂected rays, and (2) extending them behind the mirror to locate the image of the ﬂame. (Assume the candle and image are viewed by an observer on the left.) 4. The ray diagram below shows the reﬂection of one of the rays that strikes the parabolic mirror. Notice that the law of reﬂection is obeyed, and the angle of incidence (from the normal, the dashed line) equals the angle of reﬂection (from the normal). Complete the diagram by drawing the reﬂected rays of the other three rays that are shown. (Do you see why parabolic mirrors are used in automobile headlights?) 5. A girl takes a photograph of the bridge as shown. Which of the two sketches correctly shows the reﬂected view of the bridge? Defend your answer. The right view is correct. The reﬂected view shows the underside of the bridge, or what you would see if your eye were as far below the water surface as your eye is above it. (Place a mirror on the ﬂoor in front of a table. Students will see that the reﬂected view of the table shows its bottom.)