1 A° =
10-10 m
10 -8 m
10 10 m
None of these
Violin fork is
String instrument
Wind instrument
Reed instrument
Precussion instrument
Human can hear sound up to
50 KHz
120 KHz
20 KHz
The time period of wave is 0.25 sec. Find its frequency?
2 KHz
25 KHz
2.5 KHz
4 KHz
The property of sound which distinguishes one sound from other is called
Quality
Loudness
Pitch
Noise
The loudness level (in dB) of sound produced by the rocket during its takeoff is:
60
90
100
200
Arms of tuning fork are known as
prongs
stem
fork
Sound travels faster in
liquid
solids
gases
none of these
Noise is produced by
instruments like guitar
different machines
automobiles
both b and c
The length of a wave along the x-axis is known as its
Frequency
Time period
Wave length
Amplitude
