Question

    What happens when light enters a glass slab from

    air?
    A It bends away from the normal Correct Answer Incorrect Answer
    B It undergoes total internal reflection Correct Answer Incorrect Answer
    C It bends towards the normal Correct Answer Incorrect Answer
    D More than one of the above Correct Answer Incorrect Answer
    E None of the above Correct Answer Incorrect Answer

    Solution

    When light enters a denser medium (glass) from a less dense medium (air), it bends towards the normal due to refraction. (A) It bends away from the normal: this happens when light moves from denser to less dense mediums. (B) It undergoes total internal reflection: this only occurs when light passes at certain angles.

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