Question

how sound is produced in sensation of human ear

Answer 1

sound is produced by vibration of any thing sound needs some medium to travel because when sound is produced then it vibrates with air water or any other medium it could not travel through vaccum we can hear sound because when sound comes in our ear then it vibrates in side our ear where their is three bones and by these vibration their is a nervous which see connected through brain and these nervous only send sound to our brain

Answer 2

Sound need a material medium for it's propagition .And this medium is provided by air.
When an object vibrates, it sets neighbouring medium particles in back and fourth motion .These particles in turn transfer the disturbance to their neighboring particles and so on.
In this manner,disturbances travels through the medium and medium particles close to our ear also start vibrating .These vibrating particles of medium transfer disturbance to the eardrum and from there it reaches Incus,Malleus and Stapes. And then to the inner ear and then from auditory nerve to brain.
As a result, the disturbance (SOUND) produced by a vibrating object finally reaches our brain.
Hope it helps!!