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Q.Into how many periods has Marshall divided production time on the basis of supply?
(A) Two
(B) Three
(C) Four
(D) Seven

Bihar BsebBSEB Bihar Intermediate (Class-12) Commerce Board 2025MCQ· 1mImportance★★★★★
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Marshall divided production/supply time into FOUR periods, so the answer is (C) Four.

In the Marshallian treatment of price determination, supply cannot react instantly; how much it can adjust depends on the time allowed. On this basis Marshall recognised four time periods: (1) the market or very short period (supply is fixed), (2) the short period (supply varies only by changing variable factors), (3) the long period (all factors variable, firms can enter/exit), and (4) the very long or secular period (even technology and population change). Thi …

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