Iso-Quant Curve: Definitions, Assumptions and Properties! The term Iso-quant or Iso-product is composed of two words, Iso = equal, quant = quantity or product. The term ‘isoquant’ is composed of two terms ‘iso’ and ‘quant’. Iso is a Greek word which means equal and quant is a Latin word which means. Property 2: An isoquant curve, because of the MRTS effect, is convex to its origin. This indicates that factors of production may be substituted.

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In other words the rays show the returns to scale which implies that to increase output both the inputs should be increased in the same proportion. Diminishing returns to a factor is a situation when increasing application of the variable factor increases total output only at the diminishing rate.

These lines or rays show that both labour and capital are increased to expand output. So we can say that production level at Iq 2 is higher than the production level propperties Iq 1.

Thus, an IQ curve cannot be a horizontal line. We can therefore know the distance between two equal product curves. It is the line which shows the various combinations of factors that will result in the same level of total cost. This is feature allows you to search the site.

Properties of Iso-quant curve

Javascript software libraries such as jQuery are loaded at endpoints on the googleapis. This means diminishing marginal product of labour.

Given table 2 represents various combinations of inputs, all of which yield the same level of output, i. Equation 1 states that for an increase in the use of labour, fewer units of capital will be used. OR3 units of labour are the minimum units to produce this level of output.

No data is shared unless you engage with this feature. Therefore, two isoquant curves cannot intersect.

The iso-cost curves represent the locus of all combinations of the two input factors which result in the same total cost. When capital pro;erties taken constant at OR and production is expanded by adding more labour, the distance between successive Isoquants becomes increasingly greater, that is even more and more labour is needed for every additional units of output. Like indifference curves, isoquants are convex to the origin. We may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.


The output can only be increased if there is no increase in the cost isoquwnt the factors. It means beyond OL3 units of labour, their marginal productivity will become negative causing total output to be less than 60 quintals.

The conclusion is that the isoquant cannot be a vertical straight line. A given quantity of output may be produced with different combinations of factors. In the same way, MRTS at any particular point on the isoquant curve can be calculated by finding the slope of the isoquatn that is tangent to that point on the curve.

In figure 4, the isoquant IQ 1 shows units of output produced by various combinations of labor and capital and the curve IQ 2 shows units of output. The slope of the iso- product curve represents MRTS of labour for capital. In figure 12, the segment P 1 S 1 is the economically feasible portion of the isoquant for IQ.

The producing firm is in equilibrium. Moreover, since the lines OA, OB and OC are straight lines passing through the origin, the ratio between labour and capital remains same along each one of these lines. It so happens because the rate of substitution in different isoquant schedules need not be necessarily equal. They give the boundary of the economic region of production.

But this is not true of isoquants. It simply tells that the combinations on a given indifference curve yield more satisfaction than the combination on a lower proeprties curve of production.

This website uses cookies As a user in the EEA, your approval is needed on a few things. In other words, a declining MRTS refers to the falling marginal product of labour in relation to capital. This is really well explained and extremely simple to understand. And slope of any downward sloping curve is always negative.

Hence, the isoquant cannot be a horizontal straight line like AB. Let us explain it with the following Fig. As two indifference curves cannot cut each other, two iso-product curves cannot cut each other.


Returns to a factor refers to the behavior of output in response to changing application of one factor of production while other factors remaining constant. It can also be defined as the slope of an isoquant. Each curve refers to given quantity of output while an indifference curve to the quantity of satisfaction.

Therefore iaoquant curves which represent two levels of ieoquant cannot intersect each other. The concept of iso-cost line can be explained with the help of propetties following table 3 and Fig. Given the price of capital, if the price of labour falls, the isocost line EF in Panel B of figure 13 will extend to the right as EG and if the price of labour rises, the iso-cost line EF will ioquant inward to the left as EH, if the equilibrium points L, M, and N are joined by a line.

Isoquants: Meaning, Assumptions and Properties – Businesstopia

Since all the combinations lying in an isoquant curve yield the same level of production, a producer is indifferent between the combinations. The isoquant which is in higher stage has higher units of labor and capital combinations. Therefore B must be equal to C. It shows how the proportions of the two factors used might be changed as the firm expands. It can be written as. The level of propperties or prooperties of a production process is same throughout the curve.

With the help of Isoquant diagram, we can draw the difference between returns to scale and returns to factor. Since B is having KK 1 more units of capital it is wrong to assume that both A and B will yield the same level of output.

It is shown in figure A constant return to a factor occurs when increasing application of the variable factor increases total output only at a constant rate. If the isoquant curve had been concave to the origin, it would imply that the MRTS increases as more and more of labor is substituted for capital.