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Question-1
The distinct reflected sound from any rigid surface is called:
(A)
Reverberation
(B)
Echo
(C)
Radar
(D)
Ultrasonic sound
Question-2
Which of the following is due to regular and periodic vibration?
(A)
Noise
(B)
Music
(C)
Echo
(D)
Reverberation
Question-3
The only source of sound that produces pure notes is:
(A)
Human mouth
(B)
Tuning fork
(C)
Echo
(D)
Sound in water column
Question-4
When we touch the ringing bell we can feel the:
(A)
Vibrations
(B)
Heat
(C)
Pressure
(D)
Air
Question-5
Sounds of frequency less than 20 Hz are called:
(A)
Infrasonic sound
(B)
Ultrasonic sound
(C)
Audible sound
(D)
Echo
Question-6
Speed of sound in air is:
(A)
100 m/s
(B)
330 km/s
(C)
330 m/s
(D)
343 m/s
Question-7
Sound travels very much faster in:
(A)
Solids than liquids
(B)
Liquids than solids
(C)
Gases than liquids
(D)
Gases than solids
Question-8
Which of the following defines the shield or flatteners of a musical sound?
(A)
Frequency
(B)
Pitch
(C)
Amplitude
(D)
Period
Question-9
Which is produced due to regular and non - periodic vibrations?
(A)
Noise
(B)
Music
(C)
Reverberation
(D)
Echo
Question-10
The number of oscillations per second is called:
(A)
Time period
(B)
Frequency
(C)
Amplitude
(D)
Vibration
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Cambridge Secondary Grade 8
IGCSE
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