Which changes in the medium will likely cause the speed of light waves to decrease? check all that apply.

a. moving from a solid to a gas
b. moving from a liquid to a gas
c. moving from a gas to a liquid
d. moving from a solid to a liquid
e. moving from a liquid to a solid
f. moving from a gas to a solid

The correct options are C ,E and F.

Explanation:

Speed of light changes from medium to medium.If the light is passing from les denser medium to more denser medium its speed get altered.

This is because in the more denser medium particle are closely packed which means light ave encounter more number of particles of medium due to which energy of the light get distributed and results in delay in movement of light through the that medium.Hence, speed of light slows down  in the denser medium.The order of states from less denser to more denser is:

Air < liquid < solid

So when light moves from gas to liquid or from liquid to solid or gas to solid speed of the light wave decreases.

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