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Properties of sound and types of musical instruments

1.	Introduction to sound
2.	Propogation of sound
3.	Sound wave
4.	Types of mechanical waves
5.	Properties of sound
6.	Range of sound
7.	Musical instruments
8.	String and percussion instruments
9.	Production of sound and Structure of human ear
10.	Noise pollution

1.	Properties of a sound in terms of amplitude and frequency Difficulty: easy	3
2.	Important terms of sound Difficulty: easy	2
3.	Important terms of sound wave Difficulty: easy	2
4.	Speed of sound in air Difficulty: easy	3
5.	Propogation of sound Difficulty: easy	2
6.	Characteristics of sound Difficulty: medium	3
7.	Relation between the number of waves and wavelength Difficulty: medium	4
8.	Time period (Numericals) Difficulty: medium	3
9.	Vibrating part of musical instruments Difficulty: medium	2
10.	Numericals based on Time period and frequency Difficulty: medium	3
11.	Formula and unit Difficulty: medium	4
12.	Nature and types of sound Difficulty: medium	4
13.	Wavelength of a sound wave Difficulty: medium	4
14.	Speed of sound wave Difficulty: medium	3
15.	Numerical relates wavelength with frequency and speed Difficulty: medium	3
16.	Relate the terms - Wave types Difficulty: hard	4
17.	Check whether the sound is audible or inaudible Difficulty: hard	5
18.	Sound characteristics - Assertion and reasoning Difficulty: hard	6

1.	Training test 1 Difficulty: easy	8
2.	Training test 2 Difficulty: easy	9
3.	Homework 1 Difficulty: medium	18

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