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The Laws Of Returns To Scale
   The laws of returns to scale explain the
    behavior of output in response to a
    proportional and simultaneous change in
    inputs. Increasing inputs proportionately
    and simultaneously is, in fact, an
    expansion of the scale of production.
    When a firm increases both the inputs
     proportionately, there are three possibilities
1.   Total output may increase more than
     proportionately
2.   Total output may increase proportionately
3.   Total output may increase less than
     proportionately

Accordingly, there are three kinds of return to scale
1.  Increasing returns to scale
2.  Constant returns To Scale
3.  Decreasing returns to scale
Increasing Returns to Scale
   The law of increasing returns to scale
    implies that output increases more than
    proportionately to the increase in input
    and the rate of increase in output goes
    on increasing with each subsequent
    increase in input.
Increasing Returns to Scale
The Causes of Increasing Returns To
Scale
1. Technical and managerial
   indivisibilities
2. Higher degree of specialization
3. Dimensional relations
Constant returns to scale
   When the change in output is
    proportional to the change in inputs, it
    exhibits constant returns to scale.
Constant returns to scale
   The constant returns to scale are
    attributed to the limits of the economies
    of scale. With expansion in the scale of
    production, economies arise from such
    factors as indivisibility of fixed factors,
    greater possibility of specialization of
    capital and labor, use of labor saving
    techniques of production, etc.
Constant returns to scale
Decreasing returns to scale
 The firms are faced with decreasing
 returns to scale when a certain
 proportionate change in inputs, k & l, lead
 to less than proportionate change in
 output.
Decreasing returns to scale
Causes of Diminishing return to scale

   The decreasing returns to scale are
    attributed to the diseconomies of scale.
    The most important factor causing this is
    ‘the diminishing return to management’.
    Another factor is the exhaustibility of
    natural resources.

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Thelaw of returns to scale

  • 1.
  • 2. The Laws Of Returns To Scale  The laws of returns to scale explain the behavior of output in response to a proportional and simultaneous change in inputs. Increasing inputs proportionately and simultaneously is, in fact, an expansion of the scale of production.
  • 3. When a firm increases both the inputs proportionately, there are three possibilities 1. Total output may increase more than proportionately 2. Total output may increase proportionately 3. Total output may increase less than proportionately Accordingly, there are three kinds of return to scale 1. Increasing returns to scale 2. Constant returns To Scale 3. Decreasing returns to scale
  • 4. Increasing Returns to Scale  The law of increasing returns to scale implies that output increases more than proportionately to the increase in input and the rate of increase in output goes on increasing with each subsequent increase in input.
  • 6. The Causes of Increasing Returns To Scale 1. Technical and managerial indivisibilities 2. Higher degree of specialization 3. Dimensional relations
  • 7. Constant returns to scale  When the change in output is proportional to the change in inputs, it exhibits constant returns to scale.
  • 8. Constant returns to scale  The constant returns to scale are attributed to the limits of the economies of scale. With expansion in the scale of production, economies arise from such factors as indivisibility of fixed factors, greater possibility of specialization of capital and labor, use of labor saving techniques of production, etc.
  • 10. Decreasing returns to scale The firms are faced with decreasing returns to scale when a certain proportionate change in inputs, k & l, lead to less than proportionate change in output.
  • 12. Causes of Diminishing return to scale  The decreasing returns to scale are attributed to the diseconomies of scale. The most important factor causing this is ‘the diminishing return to management’. Another factor is the exhaustibility of natural resources.