Difference between sound and light waves

(i) For propagation of sound wave material medium is required but no material medium is required for light waves.
(ii) Sound waves are longitudinal but light waves are transverse.
(iii) Wavelength of sound waves ranges from 1.65 cm to 16.5 meter and for light it ranges from
4000 Å to 2000 Å.

Read more about sound wave

Read more about Supersonic speed

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