Question
Physics Question on communication systems
In the transmission of long distance radio signals, short wave band is used. In shorter wavelength, attenuation is very less.
A
If both assertion and reason are true and reason is the correct explanation of assertion
B
If both assertion and reason are true but reason is not the correct explanation of assertion
C
If assertion is true but reason is false
D
If both assertion and reason are false
Answer
If both assertion and reason are true and reason is the correct explanation of assertion
Explanation
Solution
The sky waves are the radio waves used for very long distance radio communication at medium and high frequencies (i.e., shortwave band). In shorter wavelength, attenuation is very less.