JAMB - Physics (1988 - No. 19)
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
解释
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.