Expansion in supply- when the quantity supplied of a commodity increases due to fall in price , it is referred to expansion in supply .. it leads to upward shift in supply curve .. Increase in supply – when the supply of a commodity increases due to the factor other than price of own commodity , it is referred to increase in supply ..it leads to rightward shift in supply curve
Increase in supply: It is due to technological advancement, decrease in input prices, decrease in unit tax, decrease in prices of other related goods and the prices of the good remaining constant.Extension in supply: With an increase in prices of the good, the other determinants of supply will remain constant.\xa0