Total internal reflectionI. Is a phenomenon of refraction of lightII. Occurs when light rays travel into a denser mediumIII. Occurs when the critical angle is just exceededIV. Is a phenomenon of reflection of lightWhich of the statements above are correct?A . I and II onlyB I and III onlyC I, II and III onlyD I, III and IV only
Question
Total internal reflectionI. Is a phenomenon of refraction of lightII. Occurs when light rays travel into a denser mediumIII. Occurs when the critical angle is just exceededIV. Is a phenomenon of reflection of lightWhich of the statements above are correct?A . I and II onlyB I and III onlyC I, II and III onlyD I, III and IV only
Solution
The correct answer is D. I, III and IV only.
Explanation: I. Total internal reflection is indeed a phenomenon of light, but it is not a phenomenon of refraction, it is a phenomenon of reflection. II. Total internal reflection does not occur when light rays travel into a denser medium. It occurs when light travels from a denser medium to a less dense medium. III. Total internal reflection occurs when the angle of incidence exceeds the critical angle, not just when it is met. IV. As mentioned before, total internal reflection is a phenomenon of reflection of light, not refraction.
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