Answer:
Step-by-step explanation:
Xylophones is an instrument which has wooden bars attached to mallet.
When bars are hit, a sound is produced which resonate in the wooden boxes.
These wooden bars are of different sizes thus there pitch different from each other.
The longer the bars, more time the sound will be there hence lower will be the pitch.
As musical instruments are different in structure, they have different nature and produce different sounds.