Question

If the temperature of a room is ${30}^{o}C$, what will be the velocity of sound?

• A. $350{ms}^{-1}$
• B. $333{ms}^{-1}$
• C. $380{ms}^{-1}$
• D. $300{ms}^{-1}$

Answer 1

The correct option is A $350{ms}^{-1}$

Answer is A.
If we increase the temperature of the air, then the speed will increase.
For every one degree Celsius rise in temperature, the speed of sound increasesby 0.6 m/s.
The speed of sound at 20 degrees C is 340 m/s.
So, the speed of sound at 30 degrees c will be around 350 m/s.