Which of the following factors affects the speed of sound in air? i. Temperature ii. pressure iii. Frequency
-
i only
- ii only
- i and ii only
- ii and iii only
The correct answer is: A
Explanation
Temperature affects the speed of sound in the air. As temperature increases, the speed of sound increases. The speed of sound is independent of pressure, i.e., it remains unchanged by the increase or decrease of pressure. Frequency does not affect the speed of sound; it only affects the pitch of the sound.