Assertion : Sound waves cannot travel in vacu | vedclass

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(B) Sound waves are mechanical waves that require a material medium for propagation because they travel through the compression and rarefaction of med

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If both $Assertion$ and $Reason$ are correct but $Reason$ is not a correct explanation of the $Assertion$.

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(B) Sound waves are mechanical waves that require a material medium for propagation because they travel through the compression and rarefaction of medium particles. Thus,they cannot travel in a vacuum. Light waves are electromagnetic waves consisting of oscillating electric and magnetic field vectors perpendicular to the direction of propagation. Since they do not require a medium,they can travel in a vacuum. The $Assertion$ is correct. The $Reason$ correctly identifies that sound waves are longitudinal (cannot be polarized) and electromagnetic waves are transverse (can be polarized). However,the ability to be polarized is a property of transverse waves,not the reason why they can travel in a vacuum. Therefore,the $Reason$ is a true statement but not the correct explanation for the $Assertion$.

$Assertion :$ Sound waves cannot travel in vacuum but light can travel in vacuum.
$Reason :$ Sound waves are longitudinal waves and they cannot be polarised but electromagnetic waves are transverse and they can be polarised.

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$Assertion :$ Sound waves cannot travel in vacuum but light can travel in vacuum. $Reason :$ Sound waves are longitudinal waves and they cannot be polarised but electromagnetic waves are transverse and they can be polarised.