Answer:
In the foreign exchange market, the equilibrium exchange rate is determined by the intersection of the demand curve for foreign currency and the supply curve of the foreign currency. 
In the above diagram, DD is the demand curve for foreign currency and SS is the supply curve of foreign currency. The point E is the point of intersection, where the demand curve and the supply curve intersect. Thus, the point E represents the equilibrium exchange rate. OR is the equilibrium exchange rate and OQ is the quantity demanded and supplied of the foreign currencies. If exchange rate rises to \[O{{R}_{1}},\] then the supply of foreign currency exceeds the demand for foreign. This will then force the exchange rate to fall back to OR due to the excess supply. On the contrary, if the exchange rate falls to \[O{{R}_{2}},\] then there exists excess demand. Consequently, the rate of exchange rises from \[O{{R}_{2}}\] to OR. Thus, in the foreign exchange market, the exchange rate determined by the intersection of the demand the foreign exchange. In case of any mismatches between the demand and the supply, then such mismatches are corrected automatically by the invisible hands of the market i.e., demand and supply.
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