The speed of sound in dry, sea level air at temperature of 0oC is………..
a) 820 m/s
b) 332 m/s
c) 1680 m/s
d) 5130 m/s
The speed of at 20oC is…….NTS PST (B) -------2021
a) 332 m/s
b) 344 m/s
c) 1680 m/s
d) 5130 m/s
The speed of sound in water is approximately
a) 1525 m/s
b) 340 m/s
c) 1680 m/s
d) 5130 m/s
Sound is kind of……………….
a) Work
b) Energy
c) Force
d) None
Sound is produced due to……..
a) Friction
b) Refraction
c) Vibration
d) Circulation
Sound is slowest in…………….
a) Liquid
b) Solid
c) Vacuum
d) Air
