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Worksheets

Wave Harmonics

Total questions: 15

Worksheet time: 12mins

Name
Class
Date
1.

This wave is found in or on a

a)

String

b)

bar

c)

Open Tube

d)

Closed Tube

2.

This wave is found in/on a

a)

String

b)

Bar or Open Tube

c)

Closed Tube

3.

This wave is found in/on a

a)

String

b)

Rod

c)

Open Tube

d)

Closed pipe

4.

This closed end tube is in the

a)

6th harmonic

b)

7th harmonic

c)

8th harmonic

d)

9th harmonic

5.

This open end tube is in the

a)

1st harmonic

b)

2nd harmonic

c)

3rd harmonic

d)

4th harmonic

6.

Which of the following bars would have the equation f=3v/2L

a)
b)
c)
d)
7.

Which of the following tubes would have the equation

f = 3v/2L

a)
b)
c)
d)
8.

The length of the tube is 2 meters. How long is the wavelength of the wave?

a)

1 meter

b)

2 meters

c)

1/2 meter

d)

1/4 meter

9.

The pictured tube is 1.2 meters long. What is the wavelength of the wave inside?

a)

.6 m

b)

1.2 m

c)

1.6 m

10.

Which tube, if the same length, would have the lowest frequency?

a)
b)
c)
d)
11.

Which of the following pairs of instruments have resonant frequencies at each whole number multiple of the lowest frequency?

a)

a clamped string and a closed pipe

b)

a clamped string and an open pipe

c)

an open pipe and a closed pipe

d)

an open pipe and a reed instrument

12.

An open pipe of length 50.0 m has standing waves formed in it. The speed of sound in air is 350 m/s. What is the fundamental frequency of the waves?

a)

1/7 Hz

b)

2/7 Hz

c)

7/2 Hz

d)

7 Hz

13.

The second harmonic of a guitar string has a frequency of 60 Hz. If the speed of waves on the string is 120 m/s, what is the string’s length?

a)

1.0 m

b)

2.0 m

c)

3.0 m

d)

4.0 m

14.

Two wave sources operating in phase in the same medium produce the circular wave patterns shown in the diagram. The solid lines represent wave crests and the dashed lines represent wave troughs. Which point is at a position of maximum destructive interference?

a)

A

b)

B

c)

C

d)

D

15.

One end of a long spring is attached to a wall. A student vibrates the other end of the spring vertically, creating a wave that moves to the wall and reflects back toward the student, resulting in a standing wave in the spring, as represented below.

What is the phase difference between the incident wave and the reflected wave at point P?

a)

0o

b)

90o

c)

180o

d)

270o