Question

Velocity of sound in air at a particular temperatute is 330 what will be its value uhen temperature is doubled and pressure is halved

Answer 1

Answer:

air at NTP 33om/s

Explanation:

Answer 2

Answer:

$V'=330\sqrt{2}\ m/s$

Explanation:

Given that

At temperature T velocity of sound is 330 m/s.

We know that velocity of sound is directly proportional to the square root of temperature.

 $V\alpha \sqrt T$     ------1

When temperature become double T'=2T

 $V'\alpha \sqrt T'$       ----2

From equation 1 and 2

$\dfrac{V}{V'}=\sqrt{\dfrac{T}{T'}}$

$\dfrac{330}{V'}=\sqrt{\dfrac{T}{2T}}$

$V'=330\sqrt{2}\ m/s$

So the velocity of sound will become $V'=330\sqrt{2}\ m/s$