Question

Give reason for “speed of sound is different in different medium ”

Answer 1

1. Sound travels at different speeds in different medium due to difference density of molecules in different mediums.
2. Higher the density of molecules - faster the sound travels and lower the density - slower the sound travels.
3. For example the speed of sound in steel (solid) is $5000\mathrm{m}/\mathrm{s}$and slowest through gas (air) $340\mathrm{m}/\mathrm{s}$.

Hence due to difference in density of molecules in different medium sound travels with different speed.