Which of the ff statement is incorrect?

A.sound travels in a strained line
B.sound travel as a wave
C.sound is a form of energy
D.sound travels faster in vacuum than in air

D. sound travels faster in vacuum than in air (incorrect statement)

The incorrect statement is D. Sound does not travel faster in a vacuum than in air. Sound waves require a medium such as air, water, or solid objects to propagate. In a vacuum, where there is no medium, sound cannot travel at all.