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Physics 10 Chapter 11 - Sound - 17
1.
How many times sound waves travel faster in water than in air?
a) Five times
b) Six times
c) Seven times
d) Eight times
2.
What are the places called where air pressure is slightly higher than the surrounding air pressure?
a) Crests
b) Troughs
c) Rarefactions
d) Compressions
3.
What are the places called where air pressure is slightly lower than the surrounding air pressure?
a) Crests
b) Troughs
c) Rarefactions
d) Compressions
4.
Which instrument is used to see sound waves?
a) Stethoscope
b) Microscope
c) Oscilloscope
d) Endoscope
5.
By which of the following instrument you can see sound waves?
a) Oscilloscope
b) Stethoscope
c) Endoscope
d) Microscope
6.
Which of the following is watched by using oscilloscope?
a) Light waves
b) Radio waves
c) Sound waves
d) Heat waves
7.
Which of the following waves cannot pass through vacuum?
a) Light waves
b) Sound waves
c) Radio waves
d) Heat waves
8.
What will be affected by the nature of medium?
a) Wavelength of sound wave
b) Speed of sound wave
c) Frequency of sound wave
d) Amplitude of sound wave
9.
The speed of sound in liquid is how many times than in gases?
a) Six times
b) Sixteen times
c) Fifteen times
d) Five times
10.
What is the loudest animal sound ever recorded by blue whale?
a) 180 dB
b) 100 dB
c) 120 dB
d) 140 dB
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