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Class 9 Science Chapter List
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12. SOUND
12. SOUND
14 Maths Exercise Solutions
12.2 Propagation of Sound
12.3 Reflection of Sound
12.4 Range of Hearing
12.5 Application of Ultrasound
12.6 Structure of Human Ear
How does the sound produced by a vibrating object in a medium reach your ear?
12.2 Propagation of Sound, Question No.1
How does the sound produced by a vibrating object in a medium reach your ear?
Explain how sound is produced by your school bell.
12.2 Propagation of Sound, Question No.2
Explain how sound is produced by your school bell.
Why are sound waves called mechanical waves ?
12.2 Propagation of Sound, Question No.3
Why are sound waves called mechanical waves ?
Suppose you and your friend are on the moon. Will, you be able to hear any sound produced by your friend ?
12.2 Propagation of Sound, Question No.4
Suppose you and your friend are on the moon. Will, you be able to hear any sound produced by your friend ?
Which wave property determines pitch?
12.2 Propagation of Sound, Question No.5
Which wave property determines pitch?
Which wave property determines loudness ,pitch ?
12.2 Propagation of Sound, Question No.6
Which wave property determines loudness ,pitch ?
Guess which sound has a higher pitch: Guitar or Car horn?
12.2 Propagation of Sound, Question No.7
Guess which sound has a higher pitch: Guitar or Car horn?
A sound wave has a frequency of
and wavelength
. How long will it take to travel
?
12.2 Propagation of Sound, Question No.8
A sound wave has a frequency of
and wavelength
. How long will it take to travel
?
What are wavelength, frequency, time period and amplitude of a sound wave?
12.2 Propagation of Sound, Question No.9
What are wavelength, frequency, time period and amplitude of a sound wave?
How are the wavelength and frequency of a sound wave related to its speed?
12.2 Propagation of Sound, Question No.10
How are the wavelength and frequency of a sound wave related to its speed?
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