Q. In earth's atmosphere, for $F_{1}$-layer; the virtual height and critical frequency are
A) 150 km and 3 MHz
B) 160 km and 3.5 MHz
C) 170 km and 4.5 MHz
D) 180 km and 5 MHz
Explanation
The correct answer is Option D: 180 km and 5 MHz.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.