Solution to Activity 11.3 of NCERT Class 9 Science Chapter 11 Work and Energy

3. Complete Activity 11.3 (Page 128)

• Make a list of different types of musical instruments and discuss with your friends which part of the instrument vibrates to produce sound.

Answer:

Musical instruments such as guitar, violin, harp etc have strings which vibrate.

Guitar, violin and harp.

Musical instruments such as flute, trumpet etc have vibrating air columns.

Flute and trumpet.

Musical instruments such as the drum have membranes which vibrate.

Blue drum.

Musical instruments such as the piano have strings which vibrate.

“• Make a list of different types of musical instruments and discuss with your friends which part of the instrument vibrates to produce sound.” – Solved.

Related Links:

Solution to Activity 11.1
Solution to Activity 11.2
Solution to Activity 11.3
Solution to Activity 11.4
Solution to Activity 11.5
Solutions to Chapter 11 Work and Energy

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