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In Fig. (a) , slope of S.F.D. between B and C will be
Productivity
The measure of how efficiently goods and services are produced, often gauged by the output per unit of labor input.
Labor
The effort by individuals to produce goods or services in exchange for wages or salary.
Wages
Payments made by employers to employees for their labor, typically calculated on an hourly, daily, or piecework basis.
Marginal Revenue Product
The additional revenue produced by adding one more unit of a specific input (like labor), assuming other inputs remain constant.