Worksheetsib 4.5 standing waves 1
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Question 1
Two strings X and Y have the same tension and length and are made of the same material but the diameter of Y is twice that of X. I frequency of X is 200 Hz the frequeny of Y is
a)
A 100 Hz
b)
B 150 Hz
c)
C 50 Hz
d)
D 33 Hz
2.
Question 2
a)
A Violin
b)
B Guitar
c)
C Flute
d)
D Clarinet
3.
Question 3
Which of the following makes the velocity of a wave in a stretched string greater?
a)
A tightening
b)
B plucking harder
c)
C using a thicker string
d)
D shortening the string
4.
Question 4
The 1st harmonic of a closed pipe of length L is 300 Hz. To play the same note on an open pipe the length of the pipe could be
a)
A
b)
B
c)
C
d)
D
5.
Question 5
A stretched string is plucked and a note of 150 Hz is produced. The frequency of the third harmonic is
a)
A 50 Hz
b)
B 100 Hz
c)
C 300 Hz
d)
D 450 Hz
6.
Question 6
The animation shows a standing wave in a stretched string.
If the wavelength of the wave is 10 cm, the length of the string is
a)
A 5 cm
b)
B 20 cm
c)
C 10 cm
d)
D 15 cm
7.
Question 7
The following animations represent waves.
Which ones are standing waves?
a)
A just the first
b)
B the second and third
c)
C all of them
d)
D none of them
8.
Question 8
A sound wave of frequency 100 Hz meets with one of frequency 150 Hz travelling in the opposite direction. The result is
a)
A a standing wave of frequency 125 Hz.
b)
B a standing wave of frequency 250 Hz
c)
C complete cancellations of the sound wave.
d)
D no standing wave
9.
Question 9
a)
A
b)
B
c)
C
d)
D
10.
Question 10
a)
A a node
b)
B an antinode
c)
C neither node nor antinode
d)
D midway between a node and antinode
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