Increase in velocity of sound in the air for 1°C rise in temperature is_________________? August 30, 2021March 19, 2019 by admin Increase in velocity of sound in the air for 1°C rise in temperature is_________________? A. 1.61 ms-1 B. 61.0 ms-1C. 0.61 ms-1 D. 2.00 ms-1