Name that part of ear which vibrates when outside sound falls on it.

Which of the following is the speed of sound in water and which in steel?

(a) 5000 m/s

(b) 1500 m/s

(c) 340 m/s

Name the organs of hearing in our body.

Name the three tiny bones present in the middle part of ear.

What is the function of three tiny bones in the ear?