1. The frequency of a radio wave with a wavelength of 2.2 m is b. 1.36 x 10exp8 Hz.
2. A ray of light is incident from a layer of crown glass (n = 1.52) upon a layer of water (n = 1.33). The critical angle of incidence for this situation is equal to d. 61 degrees.
3. The velocity of light in alcohol (n = 1.36) is a. 2.2 x 10exp8 m/s.
4. If the intensity of a monochromatic ray of light is increased while the ray is incident on a pair of narrow slits, the spacing between maxima in the diffraction pattern will be c. the same.
5. Which of the following materials will produce a converging lens with the longest focal length? d. quartz (n = 1.46).
6. A 1.6-meter tall person stands 0.5 m in front of a vertical plane mirror. The height of his image is e. 1.6 m.
7. Which of the following waves cannot be polarized? a. sound waves.
8. A 340-Hz tuning fork sets an air column above a water-filled cylinder vibrating in fundamental resonance. A hollow tube is inserted into the column, and the height of the tube is adjusted until strong resonance is heard. If the air column is 25 cm long, the speed of sound is a. 340 m/s.
9. A set of waves is coherent if the waves a. all have the same amplitude, frequency and phase.
10. It takes 3 seconds to detect a sound produced while the air temperature at sea level is 25 degrees C. The distance to the sound source is b. 1038 m.
