| A | B |
|---|
| Waves arriving at a free boundary are | Reflected but not inverted |
| Standing waves are produced by periodic waves of | The same frequency, amplitude, and wavelength traveling in opposite directions |
| The standing wave shown in the diagram above would be produced on a string of length L by a wave having wavelength | L |
| In general, sound travels faster through | Solids than through gases |
| The property of sound called intensity is proportional to the rate at which energy flows through | An area perpendicular to the direction of propagation |
| The perceived loudness of a sound is measured in | Decibels |
| When incoming rays of light strike a flat mirror at an angle close to the surface of the mirror, the reflected rays are | Close to the mirror's surface |
| If you stand 3.0 m in front of a flat mirror, how far away from you would your image be in the mirror? | 6.0 m |
| A concave mirror forms a real image at 25.0 cm from the mirror surface along the principal axis. If the corresponding object is at 10.0 cm distance, what is the mirror's focal length? | 7.14 cm |
| A convex mirror with a focal length of -20.0 cm has an object 30.0 cm in front of the mirror. What is the value of q for the corresponding image? | -12 cm |
