1.

Under what condition increase in demand would not make any effect on equilibrium quantity?

Answer»

Solution :CASE I: When supply decreases at the same rate as the demand increase
In the given diagram PRICE is measured on vertical axis and quantity demanded and supplied is measured on horizontal axis. Initially, the equilibrium price is OP and equilibrium quantity is OQ.
But when, "demand increases and supply decreases but at the same rate", then,
(i) Equilibrium price RISES from OP to` OP_(1)` and
(ii) Equilibrium quantity remains constant at OQ.
Case II: When supply becomes perfectly inelastic
In the given diagram price ismeasured on vertical axis and quantity demanded and supplied is measured on horizontal axis. Initially, the equilibrium price is OP and equilibrium quantity is OQ.
But when "supply becomes perfectly inelastic and demand increase" then,
(i) Equilibrium price rises from OP to `OP_(1)` and
(ii) Equilibrium quantity remains constant at OQ.
` (##FM_M_ECO_XII_P1_C12_E02_019_S01.png" width="80%">
` (##FM_M_ECO_XII_P1_C12_E02_019_S02.png" width="80%">


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