Which of the following statements are true? True False Total internal reflection

Question

Which of the following statements are true?
True False  Total internal reflection only occurs for light beams coming from inside an optically denser medium.
True False  The index of refraction is the ratio of the vacuum wavelength to the wave length inside the medium.
True False  If a light beam is incident under an angle to the surface vector of a medium of a lower index of refraction, it continues under a smaller angle.
True False  The index of refraction is independent of the wavelength of the light.

Explanation / Answer

1 .T -----.Total internal reflection only occurs for light beams coming from inside an optically denser medium.

2. T--------The index of refraction is the ratio of the vacuum wavelength to the wave length inside the medium.

3. t -----If a light beam is incident under an angle to the surface vector of a medium of a lower index of refraction, it continues under a smaller angle.

4. F ----The index of refraction is independent of the wavelength of the light.

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