A slight changes in price causes an infinite change in demand is a situation.
unit elastic demand
perfectly elastic demand
perfect inelastic demand
more elastic demand
If a demand curve is a straight line parallel to y- axis - it shows ______
less elastic demand
perfectly inelastic demand
unitary elastic demand
Change in the demand of apples due to increase in its price is its ____ demand.
contraction
extension
increase
decrease
An indifference curve is ________ to the origin.
plain
concave
convex
none of these
