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  • Which among the following is true about sky wave radio communication ? Option: 1 Critical freq is limiting freq of radio wave below which sky wa

Which among the following is true about sky wave radio communication ? 

Option: 1

Critical freq is limiting freq of radio wave below which sky wave radio communication may occur 


Option: 2

Angle of incident must be 0 that means radio wave must be normal to ionosphere layer for cal of  critical freq 


Option: 3

critical freq depends upon electron density of layer hence varies with these of day 


Option: 4

All of the above 


Answers (1)

best_answer

As we have learned

critical frequency fc -

f_{c} is defined as higher frequency of radio wave which gets reflected by ionosphere .

-

 

 Critical freq is highes tfreq of radio wave to get reflected back from an ionosphere layer when incident normally to the layer 

It values depends upon electron density of layer 

If incident radio wave is having freq more than fc then deflection doesn't take place.

 

 

 

 

Posted by

Ajit Kumar Dubey

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