Define Marginal Physical Product.
Marginal Physical Product is the change in output produced by employing one additional unit of the variable input. It can be calculated as :
MPPn=ΔTPPΔUnits of variable input
MPPn=TPPn−TPPn−1
State the behavior of Marginal Physical Product, under Returns to a Factor.
Explain the law of variable proportion with the help of total and marginal physical product curves schedule.