Production and Propagation of sound

IMPORTANT

Production and Propagation of sound: Overview

This Topic covers sub-topics such as Sound, Frequency, Vibrations, Wavelength, Compression, Rarefaction, Speed of Sound in Different Media, Speed of Wave, Variation of Speed of Sound with Temperature and, Activity on Production of Sound

Important Questions on Production and Propagation of sound

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How does the sound travel?

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Explain the dependence of speed of sound wave on the humidity of air.

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Discuss step-by-step activity on the production of sound when you are observing the vibration of the tuning fork.

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Each of the four bowls below is filled with water up to different levels. When struck with a wooden rod, which bowl will produce the sound of the lowest pitch?

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Describe an experiment to show the production of sound having low and high pitch.

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When the _____ of the sound increases, the wavelength decreases.

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The sound waves travel fastest:

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Which of the following form of energy produced when a drum vibrates?

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Christo was playing his drums. There were some beads placed near the drum. The harder he hit the drums, the higher the beads jumped. What does this activity show?

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A tuning fork having frequency 256 Hz emits a wave which has a wavelength of 1.35 m. Calculate the speed of sound in air.
Solution should contain only magnitude with one decimal accuracy in SI units ( m s-1).

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Give one examples for the following.
Warning sound
(Choose from the following- Fire alarm/ Electric bell)

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How does velocity of sound depend on its frequency?

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Sound is generated due to vibration in objects.

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Make a list of all the sounds you can hear in the playground.

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Sound can be produced when objects vibrate.

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When a ray of light refracts from denser medium to rarer medium, the angle of incidence is greater than the angle of refraction.

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Does the sound change if the vessel is large?

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Make a list of all the sounds you can hear in the classroom.

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What are the poor conductors of sound?

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Will sound travel through a vacuum? Why?