Wave Mechanics Question 873
The intensity of sound decreases at night due to
[CPMT 2000]
Options:
A) Increase in density of air
B) Decreases in density of air
C) Low temperatures
D) None of these
Show Answer
Answer:
Correct Answer: A
Solution:
We know that at night the amount of carbon dioxide in the atmosphere increases which raises the density of the atmosphere. Since intensity is directly proportional to density, intensity of sound is more at night.
BETA
