In microeconomics, economies of scale are the cost advantages that an enterprise obtains due to expansion. There are factors that cause a producer’s average cost per unit to fall as the scale of output is increased. “Economies of scale” is a long run concept and refers to reductions in unit cost as the size of a facility and the usage levels of other inputs increase.

Correct Option: B

In microeconomics, economies of scale are the cost advantages that an enterprise obtains due to expansion. There are factors that cause a producer’s average cost per unit to fall as the scale of output is increased. “Economies of scale” is a long run concept and refers to reductions in unit cost as the size of a facility and the usage levels of other inputs increase.

In economics, income elasticity of demand measures the responsiveness of the demand for a good to a change in the income of the people demanding the good, ceteris paribus. It is calculated as the ratio of the percentage change in demand to the percentage change in income. For example, if, in response to a 10% increase in income, the demand for a good increased by 20%, the income elasticity of demand would be 20%/10% = 2. A positive income elasticity of demand is associated with normal goods; an increase in income will lead to a rise in demand. If income elasticity of demand of a commodity is less than 1, it is a necessity good. If the elasticity of demand is greater than 1, it is a luxury good or a superior good.

Correct Option: B

In economics, income elasticity of demand measures the responsiveness of the demand for a good to a change in the income of the people demanding the good, ceteris paribus. It is calculated as the ratio of the percentage change in demand to the percentage change in income. For example, if, in response to a 10% increase in income, the demand for a good increased by 20%, the income elasticity of demand would be 20%/10% = 2. A positive income elasticity of demand is associated with normal goods; an increase in income will lead to a rise in demand. If income elasticity of demand of a commodity is less than 1, it is a necessity good. If the elasticity of demand is greater than 1, it is a luxury good or a superior good.

In economics, the demand curve is the graph depicting the relationship between the price of a certain commodity and the amount of it that consumers are willing and able to purchase at that given price. The shift of a demand curve takes place when there is a change in any non-price determinant of demand, resulting in a new demand curve. There is movement along a demand curve when a change in price causes the quantity demanded to change. When there is a change in an influencing factor other than price, there may be a shift in the demand curve to the left or to the right, as the quantity demanded increases or decreases at a given price. For example, if there is a positive news report about the product, the quantity demanded at each price may increase, as demonstrated by the demand curve shifting to the right.

Correct Option: B

In economics, the demand curve is the graph depicting the relationship between the price of a certain commodity and the amount of it that consumers are willing and able to purchase at that given price. The shift of a demand curve takes place when there is a change in any non-price determinant of demand, resulting in a new demand curve. There is movement along a demand curve when a change in price causes the quantity demanded to change. When there is a change in an influencing factor other than price, there may be a shift in the demand curve to the left or to the right, as the quantity demanded increases or decreases at a given price. For example, if there is a positive news report about the product, the quantity demanded at each price may increase, as demonstrated by the demand curve shifting to the right.

A shift in the demand curve is caused by a factor affecting demand other than a change in price. If any of these factors change then the amount consumers wish to purchase changes whatever the price. The shift in the demand curve is referred to as an increase or decrease in demand. A movement along the demand curve occurs when there is a change in price. This may occur because of a change in supply conditions. The factors affecting demand are assumed to be held constant. A change in price leads to a move
ment along the demand curve and is referred to as a change in quantity demanded.

Correct Option: B

A shift in the demand curve is caused by a factor affecting demand other than a change in price. If any of these factors change then the amount consumers wish to purchase changes whatever the price. The shift in the demand curve is referred to as an increase or decrease in demand. A movement along the demand curve occurs when there is a change in price. This may occur because of a change in supply conditions. The factors affecting demand are assumed to be held constant. A change in price leads to a move
ment along the demand curve and is referred to as a change in quantity demanded.

The fundamental condition of perfect competition is that there must be a large number of sellers or firms. Homogeneous Commodity is the second fundamental condition of a perfect market. The products of all firms in the industry are homogeneous and identical. In other words, they are perfect substitutes for one another. There are no trademarks, patents etc. to distinguish the product of one seller from that of another. Under perfect competition, the control over price is completely eliminated because all firms produce homogeneous commodities. This condition ensures that the same price prevails in the market for the same commodity.

Correct Option: D

The fundamental condition of perfect competition is that there must be a large number of sellers or firms. Homogeneous Commodity is the second fundamental condition of a perfect market. The products of all firms in the industry are homogeneous and identical. In other words, they are perfect substitutes for one another. There are no trademarks, patents etc. to distinguish the product of one seller from that of another. Under perfect competition, the control over price is completely eliminated because all firms produce homogeneous commodities. This condition ensures that the same price prevails in the market for the same commodity.