NCERT 9th Class (CBSE) Science: Sound Quiz

NCERT 9th Class (CBSE) Science: Sound Quiz

23 Multiple Choice Questions related to NCERT 9th Class (CBSE) Science: Sound Quiz

• The way our brain interprets the frequency of an emitted sound is called the pitch.
• The quality or timber of sound helps us to distinguish one sound from another having the same pitch and loudness.
• Hz is the unit of frequency, called as Hertz. One Hertz is equal to one cycle per second.
• The speed of sound is defined as the distance travelled per unit time by compression or rarefaction.
• The sound produced due to a mixture of several frequencies is called a note, it is pleasant to listen to.