Long-Run Costs and Returns to Scale in Economics

The video tutorial explains the concepts of long run costs and returns to scale in economics. It distinguishes between short run and long run production, highlighting the flexibility of production factors in the long run. The tutorial defines returns to scale and explores constant, increasing, and decreasing returns through examples, showing how changes in resource use affect output and average costs.

What is the main difference between the short run and the long run in economics?

• In the long run, no factors of production can be changed.

• In the short run, at least one factor of production is fixed.

• In the long run, at least one factor of production is fixed.

• In the short run, all factors of production are flexible.

Why does the law of diminishing marginal returns apply in the short run?

• Because all factors of production can be changed.

• Because at least one factor of production is fixed.

• Because firms can increase all factors of production.

• Because output always increases proportionally with input.

What happens to the average cost when there are constant returns to scale?

• Average cost fluctuates randomly.

• Average cost remains the same.

• Average cost decreases.

• Average cost increases.

In the context of returns to scale, what does it mean if output triples when resources are doubled?

• Constant returns to scale.

• Decreasing returns to scale.

• Increasing returns to scale.

• No returns to scale.

What is the effect on average cost when there are increasing returns to scale?

• Average cost becomes unpredictable.

• Average cost remains the same.

• Average cost decreases.

• Average cost increases.

What is the result of decreasing returns to scale on average cost?

• Average cost decreases.

• Average cost becomes zero.

• Average cost remains the same.

• Average cost increases.

Which of the following best describes decreasing returns to scale?

• Output increases more than the increase in resources.

• Output increases less than the increase in resources.

• Output decreases as resources increase.

• Output remains constant despite an increase in resources.