Which of the following will not conduct an element current? a. pure water b. tap water c. aquarium water d. ocean water

the answer is A, because is is the only one without any substances in is therefore lowering the conduction to a very low state

Pure water won’t conduct electricity.

A. pure water

Explanation:

Unadulterated water doesn't contain salts or debasements. The salts separate to frame particles that go about as charge bearers in directing arrangements. For a medium to lead power it ought to have transporters to convey the electrical charge.  

Therefore the nonappearance of charge transporters make unadulterated water non directing. Charge bearers in metals are electrons and in ionic arrangements, they are certain and negative particles.

Faucet water, aquarium water, and sea water contain broke up electrolytes. At the point when power is gone through them the electrolytes separate into particles and these particles direct power.

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.