EASY
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Medium is necessary for sound to propagate.

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Important Questions on Sound

HARD
Differentiated between the compression and rarefaction.
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A part of the longitudinal wave in which particles of medium are closer than the normal particles is called:
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 A longitudinal wave consists of :
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Explain the terms ‘compressions’ and ‘rarefactions’ of a wave. What type of wave consists of compressions and rarefactions?
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 A longitudinal sound wave in air consists of :
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A part of longitudinal wave in which particles of medium are farther away than the normal particles is called:
MEDIUM
If sound waves are generated in air, what moves away from the source? Is it the air itself or the state of compression and rarefaction created in the air?
MEDIUM
Distinguish between compression and rarefaction.
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 In the compression region of the medium in case of longitudinal wave :
MEDIUM
How do the following parameters change in, (a) compression, (b) rarefaction when a longitudinal wave propagates in the air? (i) pressure, (ii) density, (iii) volume, (iv) mass.
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When sound travels in air, the region of high density is called rarefaction.
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The density of air at some point in a longitudinal sound wave is minimum at an instant. The pressure of air at that point is :
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The wavelength is the linear distance between the _____.
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In the region of compression or rarefaction in a longitudinal wave the physical quantity which does not change is
MEDIUM
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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In case of a longitudinal wave, in the region of rarefaction
MEDIUM
What are compressions and rarefactions in relation to a longitudinal wave? Draw a diagram to represent them.
MEDIUM
Explain the terms 'compressions' and 'rarefactions' of a wave. What type of waves consists of compressions and rarefactions?
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The change in density/pressure of a medium from maximum value to minimum value and again to maximum value, due to the propagation of a longitudinal wave is called one complete:
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Draw a pictorial form of a longitudinal wave, showing clearly the regions of compression and rarefaction.