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Sound Wave
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Sound wave is produced by ......... object.
vibrating
In air medium,the speed of spund increses by .......... m/s with temperature rise by one degree.
0.6
If temperature increase one degree, the speed of sound will increse .......... in percentage.
0.2
A different type of sound wave which occurs only in solids is called ........wave.
Shear
Who discovered that sound moves in waves?
Galileo Galilei
What is an animal which can hear the infra sound?
Elephants / Whales
Which animal can hear over 100000Hz?
Bats / Dolphins
Frequencies which are lower than 20Hz are called as .......... sound.
Infra
Frequencies which are higher than 20000Hz are known as ........... sound.
Ultra
The audible range of human is ...........
20 Hz to 20000Hz
Tell us the correct formula to find the speed of sound.
v = d / t
Sound wave is a .......... wave depending on the vibration of particles.
Longitudinal
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