Reflection is likely to occur when the boundary dimension is ______.

Reflection is likely to occur when the boundary dimension is ______.

• A. Large
• B. Small
• C. Moderate
• D. Rough

Answer: (A)

Reflection happens when waves, rays, or particles meet a boundary and bounce back. The likelihood of this happening grows with how much boundary there is to encounter. When the boundary dimension is large, the interface area is big, so there are more opportunities for an incoming wave to meet the boundary and reflect instead of transmitting or being absorbed. With a smaller boundary, there are fewer interfaces for reflection, so energy is more likely to pass through or be absorbed. So, a large boundary dimension makes reflection most likely.

Reflection happens when waves, rays, or particles meet a boundary and bounce back. The likelihood of this happening grows with how much boundary there is to encounter. When the boundary dimension is large, the interface area is big, so there are more opportunities for an incoming wave to meet the boundary and reflect instead of transmitting or being absorbed. With a smaller boundary, there are fewer interfaces for reflection, so energy is more likely to pass through or be absorbed. So, a large boundary dimension makes reflection most likely.