Needed ! what type of fault usually occurs because of tension? a. folded c. strike-slip b. normal d. reverse

Due to tension the normal fault occurs generally.

Fault is defined as the the fracture zone between two blocks of rock. Fault, which moves along the direction of dip plane and described as either normal or reverse depend up on the motion. And these faults are no measurement of scale.

Normal fault is the fault that occurs when the earth crust is extended.

This fault is formed in the earth crust as brittle response to the stress developed during movement of tectonic plates.

i think it would be 5

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.