Which are properties of an electromagnetic wave? check all that apply. carries energy only through matter travels at the speed of light made of magnetic fields made of electrical fields radiates from a source

The wave generated due to electric fields is electromagnetic waves. The properties of electromagnetic waves include - travels at the speed of light and made of magnetic fields.

The vibrations caused due to oscillating electric as well as magnetic fields are known as electromagnetic waves. Electromagnetic waves are also produced by the motion of charged particles.

Following are the properties of electromagnetic waves -

Thus, we can conclude that the properties of electromagnetic waves include - travels at the speed of light and made of magnetic fields.

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properties of electromagnetic waves are as follows

1. travels at the speed of light

All electromagnetic waves can travel at speed of light through vacuum or air.

2. made of magnetic fields

All electromagnetic waves has magnetic field that oscillates perpendicular to the direction of wave

3. made of electrical fields

All electromagnetic waves has electric field that oscillates perpendicular to the direction of wave

4. radiates from a source

these electromagnetic waves are radiated from source in all directions normally outwards

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.