Question

THROUGH WHICH MEDIUM DOES SOUND PROPOGATE WITH FASTER SPEED 1.WATER 2.AIR 3.COPPER WIRE 4.VACUM

Answer 1

Copper wire as all other media are unsatiable means for propagation of sound.

Answer 2

Sound is a form of energy which gives us sensation of hearing.
Sound needs material medium to travel like solid, liquid and gases.
Sound cannot propagate through vacuum.
Sound travels faster in solids than liquids than gases.
Solid > liquid> gases.
Options given are:
Water- liquid
Air- Gas
Copper wire is solid.
Vacuum

So correct answer would be:
Copper wire.