Electromagnetic waves of frequency …. are reflected from ionosphere.
A. 100 MHz
B. 2 MHz to 80 MHz
C. upto 1.5 MHz
D. less than 1.5 MHz
Answer:A
Electromagnetic waves of frequency …. are reflected from ionosphere.
A. 100 MHz B. 2 MHz to 80 MHz C. upto 1.5 MHz D. less than 1.5 MHz