If a ringing bicycle bell is held tightly by hand, it stops producing sound. Why?

Name four ways in which sound can be produced.

Calculate the speed of a sound wave whose frequency is 2 kHz and wavelength 65 cm.

Which object is vibrating when the following sounds are produced?

(i) The sound of a sitar

(ii) The sound of table

(iii) The sound of a tuning fork

(iv) The buzzing of a bee or mosquito

(v) The sound of a flute

Give reason for the following :

In most of the cases, we cannot see the vibrations of a sound producing object with our eyes.