The disadvantage of diffuse reflections is that back scattered signals have a ______ strength than Specular reflections.

The disadvantage of diffuse reflections is that back scattered signals have a ______ strength than Specular reflections.

• A. Higher
• B. Same
• C. Lower
• D. Variable

Answer: (C)

Diffuse reflections come from rough surfaces that scatter incident energy in many directions. Because the energy is spread out, only a small portion returns toward the source, so the backscattered signal is weaker. Specular reflections from smooth surfaces, on the other hand, reflect most of the energy in a single direction following the angle of incidence, so when the receiver is in that direction, the backscatter is strong. Therefore, the disadvantage of diffuse reflections is that backscattered signals have lower strength than specular reflections.

Diffuse reflections come from rough surfaces that scatter incident energy in many directions. Because the energy is spread out, only a small portion returns toward the source, so the backscattered signal is weaker. Specular reflections from smooth surfaces, on the other hand, reflect most of the energy in a single direction following the angle of incidence, so when the receiver is in that direction, the backscatter is strong. Therefore, the disadvantage of diffuse reflections is that backscattered signals have lower strength than specular reflections.