SOUND MCQ
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35 Both the amplitude and the frequency of a sound wave decrease.
What happens to the sound heard?
A
The sound is louder and has a higher pitch.
B
The sound is louder and has a lower pitch.
C
The sound is quieter and has a higher pitch.
D
The sound is quieter and has a lower pitch.
36 A sound wave is travelling through water.
What is a possible speed for the wave?
A
150 m / s
B
300 m / s
C
1500 m / s
D
5000 m / s