The reception of television signals is possible by using

Audio in television signals are

Reception of information involves

(A) : The sky waves are not used in the transmission of television signals. (R) : Sky waves are mechanical waves.

What will be the area of reception of the signals transmitted by the TV antenna of length 300 m and radius of earth is 6400 km ?

Holme's signals can be given using ____

Holme's signals can be given using :