Factor Pricing

Step 1: Understanding Consumer's Equilibrium:
At equilibrium, the ratio of marginal utility to price (MU/P) for each good should be equal. This is known as the equi-marginal principle. If the marginal utility of good x is zero (MU = 0), the equilibrium price of good x must be such that the consumer gets no additional satisfaction from consuming more of good x.
Step 2: Applying the Given Information:
- Marginal utility of x (MU ) = 0.
- Marginal utility of y (MU ) = 0.
- Price of y = Rs. 9.
Since the consumer’s equilibrium is achieved when the MU/P ratio for both goods is equal, the price of good x (P ) at equilibrium will be equal to the price of good y, which is Rs. 15.
Step 3: Conclusion:
The equilibrium price of x is Rs. 15, making option (C) the correct answer.

Step 1: Understanding the Concept of Time in Price Determination:
In economics, the concept of time plays a critical role in how prices are determined. It reflects how supply and demand factors adjust over time, and how markets reach equilibrium in the short and long run.
Step 2: Analyzing Economists:
- Ricardo: David Ricardo, known for his theory of comparative advantage, did not focus specifically on the time element in price determination.
- Walras: Leon Walras contributed to general equilibrium theory but did not emphasize time factors in price formation.
- Marshall: Alfred Marshall introduced the concept of time as an important factor in the price determination process, distinguishing between the short-run and long-run perspectives.
- Pigou: Arthur Pigou focused on welfare economics and externalities, but did not specifically address the time element in price determination.
Step 3: Conclusion:
Alfred Marshall is the economist who introduced the concept of time in price determination, making option (C) the correct answer.

Step 1: Understanding Giffen’s Paradox:
Giffen's paradox refers to a situation in which the demand for a good increases as its price increases, which contradicts the basic law of demand. According to the law of demand, when the price of a good rises, the quantity demanded typically falls. However, in the case of Giffen goods, the opposite occurs. This phenomenon is observed in certain low-income populations where the good in question is a staple or inferior good.
Step 2: Analyzing the Options:
- Option (A) When demand for a good increases as its price increases: This is the correct answer. Giffen goods are characterized by the fact that as their price increases, demand for them increases as well, due to the lack of substitute goods and the necessity of the good in question.
- Option (B) When the demand for a good decreases as its price increases: This is incorrect. This is the usual behavior of most goods and follows the law of demand, not Giffen's paradox.
- Option (C) Both (A) and (B): This is incorrect. Both options cannot be true at the same time because they describe contradictory behaviors.
- Option (D) None of these: This is incorrect because (A) is the correct answer.
Step 3: Conclusion and Answer:
The correct answer is (A) because Giffen’s paradox refers to the unusual situation where demand for a good increases as its price increases, primarily for inferior goods in low-income populations.

Step 1: Defining Price Ceiling:
A price ceiling is a legally imposed maximum price that can be charged for a good or service. Price ceilings are typically set by governments to protect consumers from prices that are deemed to be too high, ensuring affordability of essential goods and services such as food, rent, and healthcare.
Step 2: Impact of Price Ceiling on the Market:
When a price ceiling is set below the equilibrium price (the price at which supply equals demand), it creates a shortage in the market. This is because at the lower price, the quantity demanded exceeds the quantity supplied, resulting in consumers being unable to purchase the product in sufficient quantities.
For example, if the government imposes a price ceiling on rent in an area with high demand, landlords may be unwilling to rent out properties at the lower price, leading to a shortage of rental units.
Step 3: Determining the Price Ceiling:
To determine a price ceiling, governments usually consider the equilibrium price in the market and set the maximum price slightly below it. However, the price ceiling only works effectively if it is below the equilibrium price. If set above the equilibrium price, it has no effect because the market will naturally set the price below the ceiling.
Step 4: Final Conclusion:
A price ceiling is a regulation that prevents the price of a good or service from rising above a certain level, typically to ensure that the product remains affordable. However, if the ceiling is set too low, it can lead to market shortages.

Step 1: Defining the Three Concepts of Revenue:
Revenue is the income that a firm receives from the sale of its goods and services. There are three main concepts of revenue:
- Total Revenue (TR): The total amount of money a firm earns from the sale of its output, calculated by multiplying the price per unit by the quantity sold.
- Average Revenue (AR): The revenue earned per unit of output sold. It is calculated by dividing total revenue by the quantity sold. Mathematically, .
- Marginal Revenue (MR): The additional revenue earned from selling one more unit of output. It is the change in total revenue resulting from a change in the quantity sold.
Step 2: Which Concept is Known as Price?
Among the three concepts, Average Revenue (AR) is also known as the price. This is because the price is essentially the revenue earned per unit of output, which is represented by the average revenue curve. In perfectly competitive markets, AR equals the market price.
Step 3: Final Conclusion:
The concept of Average Revenue (AR) is also known as the price, as it reflects the revenue per unit of output sold, which is the price consumers pay for each unit in the market.

Step 1: Introduction to Giffen Goods:
In economics, Giffen goods are a unique class of inferior goods for which an increase in price leads to an increase in demand. This phenomenon violates the basic law of demand, which states that demand typically falls when the price of a good rises. Giffen goods typically exist under special circumstances, often involving consumer behavior driven by the income effect outweighing the substitution effect.
Step 2: Key Characteristics of Giffen Goods:
- Inferior Goods: Giffen goods are a subset of inferior goods, which are those goods whose demand increases as income decreases, and vice versa. Consumers purchase more of them as their income falls because they are typically lower-quality alternatives to more expensive goods.
- The Role of the Income and Substitution Effects: The price increase of a Giffen good leads to a paradoxical behavior: the income effect (the change in demand due to the reduced purchasing power of consumers) dominates the substitution effect (the tendency to buy cheaper alternatives). Therefore, as the price of the good increases, people may feel poorer and thus consume more of it, as it remains a necessity.
Step 3: A Real-Life Example:
A classic example of Giffen goods is the case of bread or rice in a poor economy. Suppose the price of bread rises. For a low-income family, bread is a staple good. Since their overall purchasing power decreases with the price increase, they may buy more bread (a Giffen good) because they can no longer afford to buy more expensive foods (like meat or vegetables) and thus consume even more of the basic, inferior staple.
Step 4: Conclusion and Answer:
The correct answer is (A) because Giffen goods experience an increase in demand when their prices rise due to the dominating income effect that compels consumers to buy more of the inferior good, despite its higher price.

Step 1: Understanding the Law of Supply:
The law of supply states that, all else equal, there is a direct relationship between the price of a good and the quantity supplied. When the price of a good rises, the quantity supplied increases. Similarly, if the price of the good falls, the quantity supplied decreases. This relationship is illustrated by an upward-sloping supply curve in the graph.
Step 2: How This Relates to Price and Supply:
The positive relationship between price and supply suggests that producers are more willing to produce and sell a good when they can receive a higher price for it. This is due to the potential for greater profitability, which motivates producers to increase supply.
Step 3: Analyzing the Options:
- Law of Demand: The law of demand refers to the negative relationship between price and quantity demanded. It does not apply here, as the question is asking about the relationship between price and supply, not demand.
- Elasticity of Supply: Elasticity of supply measures the responsiveness of the quantity supplied to price changes. While related, this does not directly describe the relationship between price and quantity supplied.
- Law of Supply: This is the correct answer, as it directly describes the positive relationship between price and quantity supplied.
- Supply Function: The supply function represents the mathematical relationship between the price and the quantity supplied, but it does not directly describe the simple positive relationship mentioned in the question.
Step 4: Conclusion and Answer:
The correct answer is (C) because the positive relationship between price and quantity supplied is described by the law of supply.

Step 1: Understanding the Supply Curve:
The supply curve shows the relationship between the price of a good and the quantity supplied by producers. The position and shape of the supply curve are influenced by various factors, including the price of factors of production (such as labor, raw materials, and capital).
Step 2: Analyzing the Effect of Increased Prices of Factors of Production:
When the prices of factors of production increase (such as wages or raw material costs), it becomes more expensive for producers to produce goods. This typically causes the supply curve to shift to the left, indicating a decrease in the quantity supplied at every price level. This is because the higher production costs reduce profitability and the incentive to produce.
Step 3: Analyzing the Options:
- Option (A) Rightward shift in supply curve: This is incorrect. A rightward shift in the supply curve would occur if the cost of production decreases, making it cheaper to produce goods.
- Option (B) Leftward shift in supply curve: This is the correct answer. An increase in the price of factors of production leads to a leftward shift in the supply curve, as it becomes more costly to produce goods.
- Option (C) Expansion in supply: This is incorrect. Expansion in supply refers to an increase in the quantity supplied along the same supply curve, not a shift in the curve itself.
- Option (D) Contraction in supply: This is incorrect. Contraction in supply would occur if there is a decrease in the price of the good itself, not an increase in production costs.
Step 4: Conclusion and Answer:
The correct answer is (B) because an increase in the price of factors of production causes the supply curve to shift leftward.

Step 1: Understanding Marginal Revenue and Average Revenue:
Marginal revenue (MR) refers to the additional revenue a firm gains from selling one more unit of a good or service. Average revenue (AR) is the total revenue divided by the quantity of goods sold. For firms with market power, the marginal revenue decreases as more units are sold because the price must be lowered to increase the quantity sold, leading to a decrease in marginal revenue.
Step 2: Analyzing the Situation:
In a case where a firm is able to sell more by lowering the price, this generally indicates that it is in a monopolistic or imperfectly competitive market. As more units are sold, the firm must lower the price not just for the additional units, but for all the previous units as well. This means that marginal revenue will be less than average revenue.
Step 3: Analyzing the Options:
- Option (A) Greater than Average revenue: This is incorrect. As more units are sold at a lower price, the marginal revenue will be less than average revenue.
- Option (B) Less than Average revenue: This is the correct answer. As the firm lowers prices to sell more units, marginal revenue will decrease and be less than average revenue.
- Option (C) Equal to Average revenue: This is incorrect. In monopolistic markets, marginal revenue is generally less than average revenue.
- Option (D) Zero: This is incorrect. Marginal revenue does not become zero unless the firm is at the point of maximum output, where additional units no longer add to total revenue.
Step 4: Conclusion and Answer:
The correct answer is (B) because as the firm lowers its price to sell more units, its marginal revenue will be less than average revenue.

The factors of production are the inputs used to produce goods and services. The classical factors are:

Land: All natural resources.
Labour: All human effort.
Capital: Man-made goods used in further production (machinery, tools, factories).
Entrepreneurship: The skill of combining the other three factors to produce goods and services.
The options listed represent the first three classical factors, so "All of these" is the correct answer.

Step 1: Understanding the Budget Line:
The budget line represents all the combinations of two goods that a consumer can purchase given their income and the prices of those goods. The rotation of the budget line indicates a change in the price of one of the goods.
Step 2: Analyzing the Effects of Price Change:
- Option (A): A decrease in the price of apples would make the consumer able to afford more apples, and the budget line would rotate outward along the x-axis (apples axis).
- Option (B): An increase in the price of apples would reduce the consumer’s ability to afford apples, causing the budget line to rotate inward along the x-axis.
- Option (C): An increase in the price of bananas would cause the budget line to rotate inward along the y-axis (bananas axis), as the consumer can afford fewer bananas with the same income.
- Option (D): A decrease in the price of bananas would have the opposite effect, rotating the budget line outward along the y-axis.
Step 3: Conclusion:
The rotation of the budget line shown in the figure is due to an increase in the price of bananas, making option (C) the correct answer.

Step 1: Understanding a Price Taker Firm:
A price taker is a firm that operates in a perfectly competitive market where the firm cannot influence the price of the good or service it sells. The firm must accept the market price as given. Key characteristics of a price taker include a perfectly elastic demand curve (horizontal), marginal revenue equal to the price, and average revenue equal to the price.
Step 2: Analyzing the Options:
- Option (A) TR = P × Q: This is true. For a price taker, total revenue is simply the price multiplied by the quantity sold, as the firm accepts the market price.
- Option (B) AR = Price: This is true. For a price taker, average revenue is equal to the price, because the price remains constant for all quantities sold.
- Option (C) Negatively sloped demand curve: This is incorrect. A price taker firm faces a perfectly elastic (horizontal) demand curve, not a negatively sloped one. The firm can sell as much as it wants at the market price, but if it tries to charge more, it loses all customers.
- Option (D) Marginal revenue = Price: This is true. In perfect competition, marginal revenue is equal to the price because the firm is a price taker.
Step 3: Conclusion and Answer:
The correct answer is (C) because a price taker firm faces a perfectly elastic demand curve, not a negatively sloped one.

Step 1: Understanding the Time Element in Equilibrium Price:
The equilibrium price is the price at which the quantity demanded of a good equals the quantity supplied. However, the effect of time on equilibrium price is significant because in the short run, supply and demand can change at different rates, while in the long run, these forces can adjust more fully.
Step 2: Short-Term vs. Long-Term Effects:
- In the short term, the supply of goods is relatively inelastic as producers cannot immediately increase production to meet changes in demand. As a result, shifts in demand lead to more volatile price changes.
- In the long term, both supply and demand are more flexible, and the equilibrium price stabilizes as firms adjust their production levels to meet consumer demand.
Step 3: Diagram Explanation:
- In the short term, an increase in demand will lead to a rise in the equilibrium price, but the quantity supplied remains unchanged for a while.
- In the long term, as firms adjust, the supply curve shifts to meet the increased demand, which stabilizes the price. The diagram below shows the difference in equilibrium price in the short term and long term.
Step 4: Final Conclusion:
The time element in determining equilibrium price is crucial. Short-term changes in demand lead to immediate price fluctuations, while long-term adjustments allow the market to stabilize, reducing volatility.

The total profit earned by a corporation is allocated in three primary ways:

Corporate Profit Tax: A portion of the profit is paid to the government as taxes.
Dividend: A portion of the after-tax profit is distributed to the shareholders as a return on their investment.
Undistributed Profit (or Retained Earnings): The remaining portion of the after-tax profit is kept by the company for future investment, expansion, or to cover future contingencies.
Since all three are dispositions of a firm's total profit, they are all considered components of profit.