Refraction of Light

1. Define the refractive index in terms of velocity

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2. Is it possible for a ray of light to have an angle of refraction less than 90 degrees?

Question 2 of 36

3. Vacuum has a refractive index of 1?

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4. Will refraction occur when the angle of incidence of the light is zero and there is no change in direction?

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5. Define Snell's Law

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6. Which of the following medium can total internal reflection occur as light is travelling?

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7. Define absolute refractive index?

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8. Which of the following medium do you expect a weak refraction?

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9. Which of the following statement is CORRECT about refraction?

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10. Which of the following medium do you expect a greater refraction?

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11. Can total internal reflection occur when light travels from a less dense medium to a denser medium like air to water?

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12. Which of the following is NOT an application of total internal reflection?

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13. Give the refractive index for a ray of light travelling from medium 1 to 2?

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14. Mention the disadvantage to which a plane mirror has that make it not preferable for used in a periscope and other optical instrument?

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15. Refractive index of a material (in terms of real and apparent depth) is?

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16. What happens when light travels from a dense medium (glass) to a less dense medium (air)?

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17. What happens when light travels from a less dense medium (air) to a dense medium (glass)?

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18. Vertical displacement is the difference between real depth and apparent depth?

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19. Refraction is the bending of light at the interface when it travels from one medium to another?

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20. Is it possible for a ray of light to have an angle of refraction greater than 90 degrees?

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21. What is the relationship between Critical angle and refractive index?

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22. Define the refractive index in terms of velocity for a light ray travelling from vacuum to medium?

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23. Briefly explain what shall happen when the angle of incidence exceeds the critical angle C?

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24. Define critical angle

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25. Is the following formula correct when comparing velocity of light rays between 2 media: n1V1 = n2V2 ?

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26. Give the refractive index (according to the principle of reversibility of light) for a light ray reversed from medium 2 to 1?

Question 26 of 36

27. Will refraction occur when a ray of light travels perpendicular to the interface from one medium to another?

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28. Mention the 2 key main factors for total internal reflection to occur?

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29. What happens when light travels from a less dense medium (air) to a denser medium (glass)?

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30. What is the name given for an angle of incidence in the dense medium for which the angle of refraction in the less dense medium is 90 degrees?

Question 30 of 36

31. What happens when light travels from a dense medium (glass) to a less dense medium (air)?

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32. Briefly describe what happens when a light ray travelling from air to a glass block that is parallel-sided (displaced laterally)?

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33. Define Lateral displacement

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34. Define the principle of reversibility of light

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35. Light is bent as it travels from one medium to another and this bending occurs only at the interface?

Question 35 of 36

36. State the Law of refraction

Question 36 of 36