marginal efficiency of capital
( also investor’s yield or internal rate of return) (the rate of return over cost to be obtained from additional expenditure on investment of the most profitable type (which Keynes called the ‘marginal efficiency of capital’) will effect the level of investment) गुंतवणुकीवरील अपेक्षित सीमांत लाभ, भांडवलाची सीमांतिक कार्यक्षमता
