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Question 1 Which of the following statements about profit maximization is true? a) It is something that all firms actually do. b) It is something which economists believe that all firms actually do. c) It is what economists believe is the most common aim of firms. d) It means that no firms ever make losses. Question 2 Which of these statements about UK firms in 2009 is false? (Note: you do not need to learn these facts to understand any later material, but hopefully you will find them interesting.) a) More than 99% of firms have fewer than 50 employees. b) Less than 1% of firms have 250 or more employees. c) Between them, firms with fewer than 50 employees account for under 50% of the total turnover (that is total sales) of all firms. d) Between them, firms with 250 or more employees account for under 50% of the total turnover of all firms. Question 3 Which of the following statements about firms is false? a) All firms must pay corporation tax on their profits. b) Both sole proprietorships and partnerships have unlimited liability. c) All companies have limited liability. d) Internal finance arises when a company finances new assets by using past profits. Question 4 Which of the following statements about the principal-agent problem is false? a) It is the risk that a principal who hires or employs an agent to perform a task may find that the task is done poorly. b) It is least likely to arise in cases where there is asymmetric information. c) It may be reduced in the case of a company if its directors are given bonuses that relate to the company's profits. d) It may be reduced in the case of a company if its directors fear their company may be subject to competition for corporate control.Question 6 Which of the following statements about barriers to entry is false? a) They help to make a market contestable. b) They may include a fear of sunk costs. c) They may include a lack of know-how. d) They may include the well-known brand names of existing firms. Question 7 Which of the following statements about firms in different types of market is false? a) A perfect competitor has no influence over the price of its product. b) A monopolistic competitor may engage in non-price competition. c) An oligopolist may monitor the prices and products of all the other firms in its market. d) A monopolist must be a large firm. Question 8 Suppose you give up a job and use some savings to buy a small bus which you drive on a remote rural route. Which of the following costs of your firm is an explicit cost? a) The depreciation on the bus. b) The wage of the job you gave up. c) The fuel you buy for the bus. d) The interest you earned on your savings before you used them to buy the bus Question 9 To see whether a firm is making an economic profit, which of he following should be deducted from its revenue? a) Its explicit costs only b) Its explicit costs plus depreciation. c) Its implicit costs only. d) Its explicit costs and its implicit costs. Question 10 Which of the following statements is false? a) A five-firm concentration ratio assesses firms sizes with reference to the number of employees, and shows the percentage of total employment in an industry accounted for by the five firms with the most employees. b) The firms in an industry with a high concentration ratio may, nevertheless, find themselves in a highly competitive environment. c) Economic profits in a contestable market attract new entrants. d) In deciding whether to produce inputs or buy them, firms take account of transactions costs