Market for a good is in equilibrium

Market for a good is in equilibrium. There is an increase in demand for this good. Explain the chain of effects of this change.
By the given equilibrium in the market, explain the chain of effects of increase of demand for a good.
Explain with the help of a diagram, the effects of rightward shift of the demand curve of a commodity.

Equilibrium refers to the situation in which market demand is equal to market supply. The given diagram shows a situation of increase in demand. The demand curve shifts to the right, from DD to {{D}_{1}}
{{D}_{1}}. Equilibrium point shifts from
E to {{E}_{1}}. Consequently, equilibrium price rises from
OP to ${{OP}{1}}and equilibrium quantity increases from OQ to {{OQ}{1}}$.