Production and Costs | Class 12 Economics Notes
By ConceptScroll Team · Published on 17 July 2026 · 4 min read

Production and Costs – this guide gives you a concise, exam-ready overview of Production and Costs from Class 12 Economics, written by ConceptScroll editors and reviewed against the latest NCERT textbook.
3.1 PRODUCTION FUNCTION
The production function is a fundamental concept describing the relationship between inputs used by a firm and the maximum output that can be produced from those inputs. It specifies the maximum quantity of output obtainable from given quantities of inputs, assuming efficient use of inputs and given technology. For example, a farmer using land (K) and labour (L) to produce wheat can be represented by a production function q = K × L, where q is output. This function implies that output increases as either input increases. The production function is defined for a given technology; improvements in technology shift the production function upward, allowing more output from the same inputs. Inputs used in production are called factors of production. While many inputs may be involved, for simplicity, this chapter considers only two inputs: labour (L) and capital (K). The production function can be written as q = f(L, K), where q is maximum output from inputs L and K. Table 3.1 illustrates a numerical example showing output levels for various combinations of labour and capital. For instance, with 1 unit of labour and 4 units of capital, output is 10 units. The table shows that output increases with increases in either input, and zero input in either factor results in zero output. This section establishes the basis for analyzing how inputs combine to produce output efficiently.
📊 Diagram: Table on page 2 (9×9)
🔗 Connection: Introduces the concept of isoquants as graphical representations of production functions.
Table on page 2 (9×9)
| Factor | Capital | |||||||
|---|---|---|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | ||
| Labour | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 0 | 1 | 3 | 7 | 10 | 12 | 13 | |
| 2 | 0 | 3 | 10 | 18 | 24 | 29 | 33 | |
| 3 | 0 | 7 | 18 | 30 | 40 | 46 | 50 | |
| 4 | 0 | 10 | 24 | 40 | 50 | 56 | 57 | |
| 5 | 0 | 12 | 29 | 46 | 56 | 58 | 59 | |
| 6 | 0 | 13 | 33 | 50 | 57 | 59 | 60 |
Table on page 15 (6×2)
| Production function | Short run |
|---|---|
| Long run | Total product |
| Marginal product | Average product |
| Law of diminishing marginal product | Law of variable proportions |
| Returns to scale | |
| Cost function | Marginal cost, Average cost |
Table on page 16 (7×2)
| L | TP_{L} |
|---|---|
| 0 | 0 |
| 1 | 15 |
| 2 | 35 |
| 3 | 50 |
| 4 | 40 |
| 5 | 48 |
Table on page 16 (7×2)
| L | AP_{L} |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 4.25 |
| 5 | 4 |
| 6 | 3.5 |
Table on page 16 (7×2)
| L | MP_{L} |
|---|---|
| 1 | 3 |
| 2 | 5 |
| 3 | 7 |
| 4 | 5 |
| 5 | 3 |
| 6 | 1 |
Table on page 16 (8×2)
| Q | TC |
|---|---|
| 0 | 10 |
| 1 | 30 |
| 2 | 45 |
| 3 | 55 |
| 4 | 70 |
| 5 | 90 |
| 6 | 120 |
Table on page 17 (8×2)
| Q | TC |
|---|---|
| 0 | - |
| 1 | 500 |
| 2 | 300 |
| 3 | 200 |
| 4 | 300 |
| 5 | 500 |
| 6 | 800 |
Table on page 17 (7×2)
| Q | TC |
|---|---|
| 1 | 50 |
| 2 | 65 |
| 3 | 75 |
| 4 | 95 |
| 5 | 130 |
| 6 | 185 |
Frequently asked questions
Budget line indicates
Price ratio
What will be the shape of PPC when marginal opportunity cost is constant?
Straight line
Microeconomics is the study of
All of the above
Indifference curves are convex to the origin due to
diminishing Marginal Rate Substitution
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- बाज़ार संतुलन | Class 12 Economics Notes
Clear NCERT-aligned notes on बाज़ार संतुलन for Class 12 Economics.
- बाज़ार संतुलन | Class 12 Economics Notes
Clear NCERT-aligned notes on बाज़ार संतुलन for Class 12 Economics.