Which of the information below is ALWAYS correct when light travel another. Ray

Question

Which of the information below is ALWAYS correct when light travel another. Ray of light is refracted away from the normal. Ray of light is refracted towards the normal. Ray of light is refracted along the boundary separating the two media Ray of light is completely reflected with no refraction. None of the above. What is the condition for total internal reflection to occur? When light travels from a denser medium to a less dense medium When light travels from a less dense medium to a denser medium When the speed of light in incident medium is greater than the refracted medium When the speed of light in incident medium is lower than the refracted medium a and d only b and c only Total Internal Reflection occurs when the incidence angle is LESS THAN the critical angle True or False?

Explanation / Answer

7) C

8) D

9)True

Light must travel from the optically denser medium to the optically less dense one.

For total internal reflection to occur, the angle of incidence in the optically denser medium must be greater than the critical angle of that medium.

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