Properties of EM Waves: Practice Problem & Solution

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Properties of EM Waves. Understanding the underlying formula is key to arriving at the correct answer below:

Electromagnetic signals emitted by an antenna can propagate to another point on the Earth's surface as ground waves (traveling along the surface) or sky waves (reflected by the ionosphere). Thus, both forms are possible.