Question

........speed of sound in vacuum......... .... and air ...​

Answer 1

Since a vacuum is empty space, there is no medium for the sound to travel through. The speed of sound in air mainly depends on the temperature of the air. On average, it is about 343 meters per second (1,125 feet per second), which is faster than the speed of sound in a vacuum.

Answer 2

Answer:

light

Explanation:

light speed is fastest in vaccum 3*10^8 m/s.it is a transverse wave and doesnot need any material medium to travel but sound needs a medium.