Question

Which of the following actions will increase the speed of sound in air? increasing the amplitude of the sound wave increasing the frequency of the sound decreasing the air temperature reducing the pressure of the air increasing the air temperature

Answer 1

Increasing the air temperature.

Step-by-step explanation:

As we know that speed of the sound given as

`V=\sqrt{(\gamma RT)/(M)}`

Where

R=Gas constant

M=Molecular weight of the gas

T=Temperature ( In Kelvin unit)

V=Speed

γ =Adiabatic gas constant

Form above equation we can say that,velocity of the sound is directly proportional to the temperature .

`V\alpha √( T)`

Therefore we can say that when temperature increase then speed of the sound in air will increase.