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Give the Behaviour of Marginal Product and Total Product as More and More Units of Only One Input Are Employed While Keeping Other Inputs as Constant. - CBSE (Arts) Class 12 - Economics

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Question

Give the behaviour of marginal product and total product as more and more units of only one input are employed while keeping other inputs as constant.

Solution

The behaviour of marginal product and total product as more and more units of only one input are employed and remain other inputs constant can be explained through an illustration

Units of
Fixed
Factor
Units of
Variable
Factor
TP MP Stages
1 1 4 4

Increasing MP

(Increasing returns  to a factor)

1 2 12 8
1 3 24 12
1 4 32 8

Diminishing MP

(Diminishing returns to a factor)

1 5 34 2
1 6 34 0
1 7 30 -4

Negative MP

(Negative returns to a factor)

1 8 21 -9
1 9 10 -11

In the above table,

Stage I: As more units of factor input are used, MP tends to rise to 3 units of factor input are used. Here, the total product increases at an increasing rate which is called increasing returns to the factor input.

Stage II: However, when the 4th unit of factor input is used, the diminishing returns set in, where MP starts decreasing and TP increases at a decreasing rate. Diminishing MP reduces to zero. The total output is the maximum when the marginal output is zero.

Stage III: When MP is negative, TP starts declining from 34 to 10 when the 9th unit is employed.

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Solution Give the Behaviour of Marginal Product and Total Product as More and More Units of Only One Input Are Employed While Keeping Other Inputs as Constant. Concept: Total Product.
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