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SOUND NEEDS A MEDIUM...

SOUND NEEDS A MEDIUM

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Sound waves are propagating in a medium. The moduli of isothermal and adiabatic elasticity of the medium are E_(r) and E_(s) respectively. The velocity of sound waves is proportional to -

Does sound need a medium to travel? Describe an activity to show that sound is a mechanical wave and need a material medium for its propagation.

v_(s) =Speed of sound in solid medium v_(l) = Speed of sound in liquid medium v_(g) = Speed of sound in gaseous medium When arranged in the descending order of their magnitudes, the speed of sound in the three different media is

Sound needs a ___________ to travel.

(a) Does the medium through which sound passes also move ? (b) What role does a medium play in the propagation of sound ?

Which of the following statements are correct? (i) Sound is produced by vibrations. (ii) Sound requires a medium for propagation. (iii) Light and sound both require a medium for propagation. (iv) Sound travels slower than light.

Sound travels much _____ than light in a given medium.