EconomicsClass 12Production and Costs

Production and Costs | Class 12 Economics Notes

By ConceptScroll Team · Published on 17 July 2026 · 4 min read

Production and Costs | Class 12 Economics Notes

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)

FactorCapital
0123456
Labour00000000
10137101213
2031018242933
3071830404650
40102440505657
50122946565859
60133350575960

Table on page 15 (6×2)

Production functionShort run
Long runTotal product
Marginal productAverage product
Law of diminishing marginal productLaw of variable proportions
Returns to scale
Cost functionMarginal cost, Average cost

Table on page 16 (7×2)

LTP_{L}
00
115
235
350
440
548

Table on page 16 (7×2)

LAP_{L}
12
23
34
44.25
54
63.5

Table on page 16 (7×2)

LMP_{L}
13
25
37
45
53
61

Table on page 16 (8×2)

QTC
010
130
245
355
470
590
6120

Table on page 17 (8×2)

QTC
0-
1500
2300
3200
4300
5500
6800

Table on page 17 (7×2)

QTC
150
265
375
495
5130
6185

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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