Question

Give reason : A solid can transmit a
longitudinal or a transverse progressive wave
but a fluid can transmit only the former.​

Answer 1

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In order that a medium may transmit a transverse wave, its particles must experience a transverse restoring force. That is, the medium must be rigid enough to be able to withstand a shear. All solids are rigid to various degrees, possess the modulus of rigidity and can transmit a transverse progressive wave. Fluids, by their very nature, cannot withstand a shear and therefore cannot transmit a transverse wave.

On the other hand, propagation of a longitudinal wave depends on the ability of the medium to resist change in volume, i.e., compression and expansion. Since all solids, liquids and gases have this property, and possess the bulk modulus, a longitudinal wave can propagate through any material medium.

Answer 2

Answer:

ur answer is in the ATTACHMENT