Question

Diffraction allows radio signals to propagate around ________

(a) Continuous surface

(b) Smooth surface

(c) Curved surface of Earth

(d) Does not allow propagation

I got this question in an interview for internship.

This interesting question is from Diffraction in chapter Mobile Radio Propagation: Large – Scale Path Loss of Wireless/Mobile

Answer 1

The correct answer is (c) Curved surface of Earth

The explanation is: Diffraction allows radio signals to propagate around the curved surface of the Earth. Signals can propagate beyond the horizon and to propagate behind obstruction. It is the slight bending of light as it passes around the edge of an object.