Explain stringed and wind instruments. Describe how you can change the pitch in them.

How you can define the term 'cell"?

How do you change the pitch of a wind instrument?

Explain, why stringed musical instruments, like the guitar, are provided with a hollow box

Suppose you are given a circle. Describe a method by which you can find the centre of this circle.

Explain why strings of different thickness are provided on a stringed instrument.

Waveforms of two different stringed instruments can be the same.

Describe briefly how gold sols can be prepared ?

The diagram in Fig. shows three ways in which a string of length I in an instrument can vibrate. Which of the diagram shows the principal note?

How can you relate pitch and frequency?