(Agree or disagree)

1. the speed of sound in air depends on the source of the sound.

2. When the source of sound is moving, the frequency of the sound is quite different.

3.A lower pitch is heard when one is moving away from the source of sound.

4. Pitch is the highness and lowness of sound

5. When both observer and source of sound are stationary. Doffler effectis not observed.

Plss helpp po