Question

The power we use at home has a frequency of 80 Hz. Determine the period of...

  1. The power we use at home has a frequency of 80 Hz. Determine the period of the sine wave.                                                                                                                    
  1. A. Differentiate the features of Radio waves, Infrared rays and   Microwaves . Browse in the internet to give its applications

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Answer #1

Given Frequency F = 80 Hz

Time Period = 1 / f  

= 1 / 80

= 0.0125 seconds

  = 0.0125 *103 milli seconds

  = 12.5 milli seconds

Radio waves Infrared rays    Microwaves

simple for producing and able to penetrate with buildings. employed to too little distance interaction.it is unable to penetrate with obstacles. they are employed for transmitting the signals across vast distances only if obstacles are absent.
Employed in MRI scanning. police employ this kind of wave for holding the criminals. micro-ovens
size: 30 to 500 m 0.01 mm 15 cm
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