- The marginal cost curve illustrates the relationship between
the marginal cost and the quantity of goods and services produced
within a country. This curve is usually U shaped.
- This is because of the following reasons:
- When the firm is producing smaller inputs, the marginal cost
incurred by the firm is initially high.
- But, when the production increases by a smaller amout, the
marginal cost start's to decline until it reaches a minimum
value.
- After reaching this minimum point, when the production is
increased further the marginal cost again starts to rise.
Hence this curve shows the increasing and decreasing marginal
returns of a firm.
The below diagram illustrates the U shaped Marginal cost
curve:-