Chapter 11:
Waves
Practice Test
1.
What is the frequency of a wave with a wavelength of 7 m traveling at 21 m/s?
a.
3 Hz
b.
147 Hz
c.
7 Hz
d.
0.33 Hz
Hint
2.
What is the wavelength of a wave with a frequency of 0.4 kHz traveling at 16 m/s?
a.
0.01 m
b.
0.4 m
c.
4 m
d.
0.04 m
Hint
3.
What is the velocity of a wave that has a wavelength of 6 m and a frequency of 3 Hz?
a.
18 m/s
b.
2 m/s
c.
9 m/s
d.
0.5 m/s
Hint
4.
A ray of light hits a mirror at an angle of 35° to the normal. What is the angle of the reflected ray to the normal?
a.
45°
b.
35°
c.
0°
d.
70°
Hint
5.
Two waves are traveling in the same medium with a speed of 340 m/s. What is the difference in frequency of the waves if one has a wavelength of 5 m and the other has a wavelength of 0.2 m.
a.
1632 Hz
b.
1768 Hz
c.
70.8 Hz
d.
65.4 Hz
Hint
6.
Transverse wave 1 has an amplitude of 7 cm. This wave constructively interferes with wave 2. While the two waves overlap, the amplitude of the resulting wave is 10 cm. What is the amplitude of wave 2?
a.
10 cm
b.
7 cm
c.
17 cm
d.
3 cm
Hint
7.
A wave has a wavelength of 250 cm and a frequency of 4 Hz. What is its speed?
a.
0.625 Hz
b.
62.5 Hz
c.
1 m/s
d.
1000 m/s
Hint
8.
What is the wavelength of a wave with a frequency of 5 Hz traveling at 15 m/s?
a.
0.67 m
b.
3 m
c.
0.33 m
d.
45 m
Hint
9.
A wave has a frequency of 5.6 MHz. What is the frequency of this wave in Hz?
a.
560,000 Hz
b.
5600 Hz
c.
5,600,000 Hz
d.
0.0056 Hz
Hint
10.
A light ray strikes a mirror and is reflected. The angle between the incident and reflected rays is 86°. What is the angle of the incident ray to the normal?
a.
0°
b.
45°
c.
86°
d.
43°
Hint
