Question

Attenuation of ground waves is due to
1) Diffraction effect
2) Radio wave induces currents in the ground because of polarisation

• A. a & b are true
• B. Only a is true
• C. Only b is true
• D. Both a & b false

Answer 1

Answer: (A)

a & b are true

Ground waves are EM waves which travel close to the ground. Because of electromagnetic induction in the ground, the EM field is distorted, which is the cause of attenuation. attenuation is also caused by the diffraction from the ground.