PHYSICAL LAYER AND TRANSMISSION MEDIA
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Radio waves, micro-waves and infrared waves are types of
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wireless transmission
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guided transmission
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both a and b
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None
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Explanation:
Detailed explanation-1: -Radio waves, microwaves, infrared radiation, visible light, ultraviolet “light, ‘’ x rays, and gamma rays are all examples of electromagnetic energy. Electromagnetic energy is transmitted in the form of waves with varying wavelengths.
Detailed explanation-2: -Infrared waves are longer than those of visible light, but shorter than those of radio waves. Correspondingly, the frequencies of IR are higher than those of microwaves, but lower than those of visible light, ranging from about 300 Ghz to 400 THz.
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