उत्पादन के नियमों के संदर्भ में परिवर्ती अनुपात के नियम के दूसरे चरण में क्या होता है?

In the first stage of the law of variable proportions:

According to the Law of Variable Proportions, as more units of a variable input are added to a fixed input, the marginal product eventually:

In the context of the Law of Variable Proportions, the 'point of inflection' refers to the point where: