Q. The intensity of sound increases at night due to
A) Increase in density of air
B) Decreases in density of air
C) Low temperature
D) None of these
Explanation
(a) We know that at night amount of carbon dioxide in atmosphere increases which raises the density of atmosphere. Since intensity is directly proportional to density, intensity of sound is more at night
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.