PHYSICAL LAYER AND TRANSMISSION MEDIA
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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reflection
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refraction
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incidence
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criticism
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Detailed explanation-1: -If the angle of incidence is greater than the critical angle, light is not refracted at all, when it falls on the surface from a denser medium to a rarer medium.
Detailed explanation-2: -ï More dense to a less dense medium, the light wave speeds up and bends away from the normal. ï Less dense to a more dense medium the light wave slows down and bends toward the normal. The greater the angle of incidence the larger the angle of refraction.
Detailed explanation-3: -For total internal reflection to occur, incidence angle must be greater than the critical angle.
Detailed explanation-4: -For any angle of incidence less than the critical angle, part of the incident light will be transmitted and part will be reflected. The normal incidence reflection coefficient can be calculated from the indices of refraction.