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Worksheets

Chapter6

Total questions: 20

Worksheet time: 30mins

Name
Class
Date
1.

In the diagram which letters represent the nodes

a)

A B C

b)

A C E

c)

B D

d)

B D E

e)

A C D

2.
The moving black dot is called:
a)
a node
b)
an anti-node
c)
an anti-amplitude
d)
the wangy bit
3.
The stationary dot is called:
a)
a node.
b)
an anti-node.
c)
the amplitude.
d)
the not moving bit.
4.
Which harmonic is shown?
a)
1st
b)
2nd
c)
3rd
d)
4th
5.

How many antinodes does this standing wave have?

a)

5

b)

6

c)

7

d)

8

6.

The first harmonic has

a)

1 antinode

b)

1 node

c)

2 antinodes

d)

no nodes

7.

The second harmonic on a string fixed at both ends shows

a)

A wavelength

b)

Half a wavelength

c)

Two wavelengths

8.
A wave in which the particles of the medium move perpendicularly to the direction the wave is traveling
a)
A. surface wave
b)
B. transverse wave
c)
C. electromagnetic  wave
d)
D. longitudinal wave
9.
When two waves combine to form a new wave with a smaller amplitude, it is called 
a)
Constructive Interference
b)
Destructive Interference
10.

The figure represents a string of length L, fixed at both ends, vibrating in several harmonics. Which string shows the 4th harmonic?

a)

A

b)

B

c)

C

d)

D

e)

E

11.

The figure represents a string of length L, fixed at both ends, vibrating in several harmonics. Which string shows the 3rd harmonic?

a)

A

b)

B

c)

C

d)

D

e)

E

12.

The figure shows several modes of vibration of a string fixed at both ends. The mode of vibration that represents the fifth harmonic is

a)

1

b)

2

c)

3

d)

4

e)

None of these is correct.

13.

A pipe, opened at both ends (40 cm long) makes a tone travelling at 330 m/s. Calculate the frequency of the fundamental wave.

a)
412.5 Hz
b)
825 Hz
c)
1650 Hz
d)
3300 Hz
14.

What property of this wave is represented by the letter "A"

a)
Amplitude
b)
Frequency
c)
Wavelength
d)
Speed
15.

What type of interference is represented in the diagram?

a)
Constructive interference
b)
Destructive interference
c)
Diffraction
d)
Refraction
16.

The pipe length of A is 0.18 m. Sound travels at 343 ms-1 Calculate the frequency of the sound produced.

a)

1429.17 Hz

b)

1905.56 Hz

c)

343 Hz

d)

686 Hz

17.

The pipe length of B is 0.25 m. What is the wavelength of the sound produced?

a)
0.25 m
b)
0.50 m
c)
1.00 m
d)
0.75 m
18.

The pipe length of C is 0.25 m. What is the wavelength of the sound produced?

a)
0.5 m
b)
0.25 m
c)
1 m
d)
0.75 m
19.

The pipe length of D is 0.65 m. The frequency of the sound produced is 1200 Hz. Calculate the wave velocity.

a)
780 m/s
b)
800 m/s
c)

120 m/s

d)
840 m/s
20.

Draw fifth harmonics of closed organ pipe.