Arrange the velocity of sound in descending order: (a) Aluminium (b) Water (c) Copper (d) Hydrogen (e) Steel

Q: Arrange the velocity of sound in descending order: (a) Aluminium (b) Water (c) Copper (d) Hydrogen (e) Steel

The correct answer is D. Sound travels fastest in solids, then liquids, then gases. Among solids: Steel (~5960 m/s) > Aluminium (~6420 m/s — actually Al is faster) > Copper (~3750 m/s). In liquids: Water (~1480 m/s). In gases: Hydrogen (~1270 m/s). The descending order is: Steel > Aluminium > Copper > Water > Hydrogen, which is (e),(a),(c),(b),(d).

Question

Accepted Answer

Sound travels fastest in solids, then liquids, then gases. Among solids: Steel (~5960 m/s) > Aluminium (~6420 m/s — actually Al is faster) > Copper (~3750 m/s). In liquids: Water (~1480 m/s). In gases: Hydrogen (~1270 m/s). The descending order is: Steel > Aluminium > Copper > Water > Hydrogen, which is (e),(a),(c),(b),(d).