The graph of flow versus viscosity is best described as which form?

The graph of flow versus viscosity is best described as which form?

• A. Positive linear graph
• B. Exponential growth
• C. Horizontal line
• D. Exponential decay

Answer: (D)

As viscosity rises, resistance to flow increases and the actual flow decreases. Among the given shapes, a curve that shows a decreasing relationship best describes how flow falls as viscosity goes up. An exponential decay captures that kind of monotone, diminishing flow with increasing viscosity, whereas a horizontal line would mean no change, positive linear would imply flow increases with viscosity, and exponential growth would imply flow increases rapidly. Although the exact mathematical relationship is more precisely inverse (flow ∝ 1/viscosity), the exponential decay option most closely represents the decreasing trend you’d expect as viscosity increases.

As viscosity rises, resistance to flow increases and the actual flow decreases. Among the given shapes, a curve that shows a decreasing relationship best describes how flow falls as viscosity goes up. An exponential decay captures that kind of monotone, diminishing flow with increasing viscosity, whereas a horizontal line would mean no change, positive linear would imply flow increases with viscosity, and exponential growth would imply flow increases rapidly. Although the exact mathematical relationship is more precisely inverse (flow ∝ 1/viscosity), the exponential decay option most closely represents the decreasing trend you’d expect as viscosity increases.