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State the differences between sound and light.

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Sound Light
Medium is required for the propagation. Medium is not required for the propagation.
Sound waves are longitudinal. Light waves are transverse.
Wavelength ranges from 1.65 cm to 1.65 m. Wavelength ranges from 4 x 10-7m to 7 x 10-7 m.
Sound waves travel in air with a speed of about 340 ms-1 at NTP. Light  waves travel i air with a speed of 3 x 10ms-1.

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