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A light ray strikes the perfectly smooth boundary between two different materials. The index of refraction...

A light ray strikes the perfectly smooth boundary between two different materials. The index of refraction of the material before the boundary is lower than that of the material after the boundary. On the basis of this information, the light ray will be

a. partially transmitted in a direction deviating more from the normal and partially reflected.

b. partially transmitted in a direction deviating less from the normal and partially reflected.

c. partially transmitted exactly in the same direction and partially reflected.

d. totally transmitted exactly in the original direction, without any reflection.

e. totally reflected in the first material, without any forward transmission.

A certain material has an index of refraction of 5/4. That means that in this material, as compared to a vacuum, light

a. travels at the same speed but has (4/5) of the frequency it would have in a vacuum.

b. travels with a speed (5/4) c and the frequency is the same it would be in a vacuum.

c. travels at the same speed but has (5/4) of the frequency it would have in a vacuum.

d. travels with a speed (4/5) c and has (4/5) the frequency it would have in a vacuum.

e. travels with a speed (4/5) c and the frequency is the same it would be in a vacuum.

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