engineering recuitment BPSC Assistant Sanitary & Waste Management Officer Mock Test 2022 General Science Physics Units and Dimensional Formula
With the reference to velocity of sound which of the following statements is NOT correct?
1
The velocity of sound in the air decreases as the humidity increases.
2
The velocity of sound in air is independent of pressure.
3
The velocity of sound in air increases with the increase of temperature.
4
The velocity of sound in air is not affected by the change in frequency.