Class 12 Economics — Chapter 4: The Theory of the Firm under Perfect Competition

What you'll learn

• ▸Defining Features of Perfect Competition
• ▸Price-Taking Behavior of Firms
• ▸Revenue Concepts in Perfect Competition
• ▸Relationship between Price, AR, and MR
• ▸The Goal of Profit Maximization
• ▸Conditions for Profit Maximization

Chapter Summary

--- PAGE 1 --- Chapter 4 The Theory of the Firm under Perfect Competition In the previous chapter, we studied concepts related to a firm’s production function and cost curves. The focus of this chapter is different. Here we ask : how does a firm decide how much to produce? Our answer to this question is by no means simple or uncontroversial. We base our answer on a **critical**, if somewhat unreasonable, assumption about firm behaviour – a firm, we maintain, is a ruthless **profit maximiser**. So, the amount that a firm produces and sells in the market is that which maximises its profit. Here, we also assume that the firm sells whatever it produces so that ‘output’ and quantity sold are often used interchangeably. The structure of this chapter is as follows. We first set up and examine in detail the profit maximisation problem of a firm. Then,0 we derive a firm’s **supply curve**. The supply curve shows the levels of output that a firm chooses to produce at different market prices. F…

Practice Questions from this Chapter

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1. Explain how firms make money. Get Solution →
2. Describe perfectly competitive markets. Get Solution →
3. Give a real-world example of price-taking. Get Solution →
4. According to the text, how is a firm's profit, denoted by π, defined? Get Solution →
5. What is the critical assumption about firm behavior that the chapter is based on? Get Solution →
6. Which of the following is a defining feature of a perfectly competitive market? Get Solution →
7. In a perfectly competitive market, what does the term 'homogenous product' mean? Get Solution →
8. How is the Total Revenue (TR) of a firm calculated in a perfectly competitive market? Get Solution →

Did you know?

• 💡 The earliest known market in Jericho existed over 9,000 years ago.
• 💡 Ancient Romans advertised products using public criers and wall paintings.
• 💡 Standard weights and measures were invented to ensure fair trade in ancient markets.
• 💡 The word "economy" originated from a Greek term for "household management."
• 💡 Before money, people traded goods like salt, spices, and even cattle for value.

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