Q52 of 199 Page 186

Describe a simple experiment to show that the prongs of a sound producing tuning fork are vibrating.

Suspend a tennis ball on a rigid support by means of a string. Touch the Vibrating turning fork. You will be able to see that the tennis ball is set into motion by the vibrations.


More from this chapter

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50

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

 51

Give reason for the following :

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

 53

When we open a gas tap for a few seconds, the sound of escaping gas is heard first but the smell of gas comes later. Why?

 54

A sound signal of 128 vibrations per second has a wavelength of 2.7 m. Calculate the speed with which the wave travels.