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IES ISS 2023 GENERAL ECONOMICS PAPER 3 SECTION C COMPLETE SOLUTION WITH DETAILED ANSWERS



1. Distinguish between internal Rate of Return (IRR)' and 'Net Present Value (NPV)' criteria of evaluating public investment projects. What is the role of shadow prices in this context?


The Internal Rate of Return (IRR) and Net Present Value (NPV) are both criteria used to evaluate the financial viability and desirability of investment projects. However, they differ in their approach and focus. The key distinctions between IRR and NPV, along with the role of shadow prices, are as follows:


1. Definition and Calculation:

- IRR: The IRR is the discount rate at which the present value of cash inflows equals the present value of cash outflows. It is the rate at which the project breaks even, resulting in an NPV of zero. The IRR is calculated by finding the discount rate that satisfies this condition.

- NPV: The NPV is the difference between the present value of cash inflows and the present value of cash outflows. It represents the net contribution of the project to wealth creation. The NPV is calculated by discounting all cash flows using a predetermined discount rate.


2. Decision Rule:

- IRR: The IRR decision rule states that if the IRR is greater than the required rate of return (or the discount rate), the project is acceptable. In other words, if the IRR exceeds the hurdle rate, the project is deemed financially viable.

- NPV: The NPV decision rule states that if the NPV is positive, the project should be accepted, as it indicates that the project adds value and increases the wealth of the investors.


3. Handling of Multiple Projects:

- IRR: When evaluating multiple projects, the IRR criterion can be misleading and may lead to incorrect decisions. This is because the IRR assumes that the project's cash inflows can be reinvested at the same rate, which is not always realistic.

- NPV: The NPV criterion is more appropriate for evaluating multiple projects as it accounts for the opportunity cost of capital. It considers the actual discount rate used for each project, making it suitable for ranking and selecting projects.


4. Role of Shadow Prices:

Shadow prices are the economic values assigned to inputs or outputs that do not have market prices. In the context of project evaluation, shadow prices are used to capture the opportunity cost of resources and incorporate externalities or environmental impacts.


- IRR: The IRR does not explicitly consider shadow prices. It focuses solely on the internal cash flows of the project and does not account for external costs or benefits.

- NPV: The NPV can incorporate shadow prices by assigning economic values to inputs or outputs that are not priced in the market. By including shadow prices, the NPV captures the true economic costs and benefits of the project, providing a more comprehensive evaluation.


In summary, while both IRR and NPV are commonly used criteria for evaluating investment projects, they differ in their calculation, decision rules, treatment of multiple projects, and consideration of shadow prices. The IRR is based on the internal rate of return and compares it to the required rate of return, while the NPV considers the net present value of cash flows using a predetermined discount rate. The NPV is often considered more appropriate for evaluating multiple projects, and it can incorporate shadow prices to account for the true economic costs and benefits of the project.


2. Discuss the agendaand outcomes of the 'Conference of the Parties 27 (COP27)' in the context of action on climate change.What role did India play in this Conference?


Together with the Ministry of Environment, Forests and Climate Change (MoEFCC), UNDP is leading the action from the India Pavilion at COP 27. The Pavilion is based on the theme of India's flagship campaign - LiFE- Lifestyle for Environment.

  • MoEFCC, UNDP, UN in India, and UNEP India organized a session on the sidelines of COP 27 at the India Pavilion in Sharm El-Sheikh, Egypt. The session 'Understanding the Concept of LiFE' highlights experiences and best practices to support strategies and action towards sustainable living and climate action.

  • At the side-session, Minister of Environment, Forest and Climate Change Sh. Bhupender Yadav and senior dignitaries from UNEP, UNDP, and UNFCCC also released a compendium of best practices, Prayaas Se Prabhaav Tak – From Mindless Consumption to Mindful Utilization. The compendium proposes behavior change frameworks that can support the development of policies to drive sustainable consumption and production worldwide. It also showcases some LiFE actions from India, demonstrating climate-friendly practices and behaviors to inspire others to make a difference.

  • UNDP, MoEFCC, and the National Museum of Natural History (NMNH) jointly launched the "In Our Lifetime" campaign. It calls for ideas from youth across the world. The youth will be encouraged to submit their climate actions that are sustainable and scalable that can be shared globally. Based on the submissions, an Innovation Summit to promote the exchange and enhancement of ideas among students, colleges, and experts will be facilitated by India at COP 28.

  • At the launch of the India Pavilion on November 6, Mr. Bhupender Yadav, Minister of Environment, Forest and Climate Change, Government of India, felicitated winners of the COP27 Young Scholar Programme. The Programme initiated by UNDP India and UNICEF provided a platform to the youth to share their climate action initiatives. More than 350 youth from 27 states across India sent their entries for the program.

  • A side event on 'Mainstreaming climate risk in corporate investing - the role of financial disclosures' was moderated by UNDP India and IORA Ecological Solutions at the India Pavilion. ·

  • UNDP India Youth Climate Champion Prajakta Koli and Women at Work ambassador Bhumi Pednekar have been featured in the 'Dear World Leaders' global campaign being broadcast at the UNFCCC COP27 plenary venue.

  • Experts from UNDP India are participating in discussions and sharing UNDP’s work on:

1. Delivering climate resilience through social protection

2. Productive Decarbonisation Pathways to Achieve India's Net Zero Targets

3. Towards a Carbon-Neutral Bihar in the Brick Sector- Showcasing a Public-private Partnership Approach


3. Elaborate on the appropriate valuation method of the amenities offered by a public park to its visitor.

When determining the value of amenities offered by a public park to its visitors, several valuation methods can be used. The appropriate method depends on the specific context, available data, and the purpose of the valuation. Here, I will discuss the contingent valuation method (CVM), which is commonly used for valuing non-market goods such as amenities.


The contingent valuation method (CVM) is a survey-based approach that seeks to elicit people's preferences and willingness to pay for a particular amenity or resource. In the case of a public park, the CVM can be used to estimate the economic value that visitors place on the park's amenities.


The process of using CVM involves the following steps:


1. Survey Design: A well-designed survey is crucial to obtain accurate and reliable responses. The survey should include clear and concise descriptions of the amenities offered by the park, their attributes, and the hypothetical scenarios that respondents will evaluate.


2. Hypothetical Scenarios: The survey presents respondents with hypothetical scenarios that involve different levels or changes in the park's amenities. For example, respondents may be asked about their willingness to pay for improved facilities, additional recreational activities, or enhanced maintenance.


3. Willingness to Pay: Respondents are asked to indicate their willingness to pay (WTP) for the described amenities. This can be measured through various formats, such as open-ended questions (where respondents state the amount they are willing to pay) or closed-ended questions (where respondents choose from predefined payment ranges).


4. Data Analysis: The collected data is analyzed to estimate the average WTP for the park's amenities. Statistical techniques, such as regression analysis, can be employed to identify the factors that influence WTP and to estimate the overall economic value.


It is important to acknowledge the limitations and challenges associated with the contingent valuation method. These include potential biases in responses, hypothetical bias (discrepancy between stated and actual behavior), and sample representativeness. Careful attention should be given to survey design, sample selection, and data analysis to minimize these limitations.


By employing the contingent valuation method, policymakers and park managers can gain insights into the economic value that visitors place on the amenities of a public park. This information can inform decision-making processes, such as budget allocation, prioritization of investments, and development of management plans, ultimately contributing to the effective management and enhancement of the park's amenities for the benefit of its visitors and the surrounding community.

4. Distinguish between 'product innovation' and 'process innovation'. How are innovation activities in an economy affected by market structure? What role does R & D expenditure play in promoting technological change?


Product innovation and process innovation are two distinct types of innovation that can occur within an economy.


Product Innovation:

Product innovation refers to the development and introduction of new or improved products or services in the market. It involves creating novel features, functionalities, or designs that provide enhanced benefits to consumers or meet unmet needs. Product innovation aims to offer unique value propositions to customers, differentiate from competitors, and capture market share. Examples of product innovation include the introduction of new smartphone models, advanced medical devices, or innovative software applications.


Process Innovation:

Process innovation, on the other hand, focuses on improving the methods, techniques, or systems used to produce goods or deliver services. It aims to enhance efficiency, reduce costs, increase productivity, and improve quality. Process innovation often involves the adoption of new technologies, reengineering of production processes, or the implementation of organizational changes to streamline operations. Examples of process innovation include the implementation of automated manufacturing systems, the adoption of lean production techniques, or the development of more efficient logistics and supply chain management practices.


Market Structure and Innovation Activities:

Market structure influences innovation activities in an economy. The level of competition, barriers to entry, and the presence of dominant firms can shape the incentives and capabilities for innovation. In highly competitive markets, firms are motivated to innovate to gain a competitive edge and capture market share. Intense competition encourages firms to invest in research and development (R&D), seek efficiency gains through process innovation, and introduce new products to meet evolving consumer demands.


In monopolistic or oligopolistic markets with limited competition, the incentives for innovation may be different. Dominant firms may have less pressure to innovate as they face fewer competitive threats. However, they may still engage in innovation activities to maintain market power, improve product offerings, or enhance process efficiencies. In these market structures, firms may also use innovation strategically to deter potential entrants or maintain barriers to entry.


Role of R&D Expenditure:

R&D expenditure plays a crucial role in promoting technological change and innovation. R&D activities involve the exploration and development of new knowledge, technologies, and solutions. They contribute to the creation of new products, processes, and services, driving economic growth and productivity improvements.


Investments in R&D facilitate the generation of new ideas, the discovery of breakthrough technologies, and the improvement of existing products and processes. R&D expenditure supports innovation by enabling firms to conduct research, experiment with new concepts, prototype designs, and test new technologies. It also facilitates collaborations between academia, industry, and research institutions, fostering knowledge transfer and the exchange of ideas.


Governments and policymakers often play a role in promoting R&D expenditure through various incentives and support mechanisms. These can include tax credits, grants, subsidies, and funding programs aimed at encouraging firms to invest in R&D. By stimulating R&D activities, economies can foster technological advancements, enhance competitiveness, and drive long-term economic development.


In conclusion, product innovation and process innovation represent different forms of innovation within an economy. Market structure influences the incentives and dynamics of innovation activities, with competitive markets often driving firms to innovate. R&D expenditure plays a critical role in promoting technological change by supporting research, development, and the generation of new knowledge and solutions.


5. Critically examine the role of State in correcting 'market failure' and bring out the importance of planning in this context.


The role of the state in correcting market failures and the importance of planning in this context are crucial aspects of economic governance. Market failures occur when the free market mechanism fails to allocate resources efficiently or fails to achieve desired societal outcomes. In such cases, the state intervenes to correct these failures and ensure better outcomes for the society as a whole.


The state's role in correcting market failures involves several dimensions:


1. Providing Public Goods: Market failures often occur when goods or services have characteristics of non-excludability and non-rivalry, making it difficult for the private sector to provide them efficiently. The state steps in to provide public goods such as national defense, infrastructure, and basic education, which benefit society collectively.


2. Addressing Externalities: Externalities, whether positive or negative, are costs or benefits imposed on third parties who are not involved in the market transaction. The state intervenes through regulations, taxes, or subsidies to internalize these externalities and ensure that the costs and benefits are accounted for in decision-making.


3. Regulating Monopoly Power: Market failures can arise from the abuse of monopoly power, resulting in higher prices and reduced consumer welfare. The state regulates monopolies, promotes competition, and enforces antitrust laws to prevent market distortions and promote efficiency.


4. Reducing Information Asymmetry: Information asymmetry occurs when one party in a transaction has more information than the other, leading to market failures such as adverse selection and moral hazard. The state intervenes through regulations, disclosure requirements, and consumer protection laws to ensure transparency and mitigate these problems.


In this context, planning plays an important role in coordinating and guiding state interventions to address market failures effectively. Planning involves setting long-term goals, formulating policies, and allocating resources in a systematic manner. It helps identify areas where market failures exist, assess their impact on society, and design appropriate interventions.


Planning allows the state to prioritize public investments, allocate resources to sectors that require attention, and coordinate policies across various sectors. It provides a framework for assessing social costs and benefits, evaluating trade-offs, and ensuring equitable distribution of resources and opportunities.


Furthermore, planning facilitates the integration of environmental sustainability, social welfare, and economic development objectives. It helps align the state's interventions with broader societal goals and ensures that market failures are addressed in a comprehensive and coherent manner.


However, it is essential to recognize that planning should be flexible, adaptive, and responsive to changing circumstances and feedback from market dynamics. Overly rigid or centralized planning can lead to inefficiencies, lack of innovation, and reduced responsiveness to market signals.


In conclusion, the state plays a crucial role in correcting market failures through various interventions, including the provision of public goods, regulation of externalities, addressing monopoly power, and reducing information asymmetry. Planning is essential in guiding these interventions, ensuring efficient resource allocation, and aligning them with societal goals. However, effective planning should strike a balance between intervention and market dynamics, allowing for flexibility and responsiveness to promote sustainable and inclusive economic development.


6. Consider a duopoly with product differentiation in which the demand and cost functions are--

q_1 = 88-4p_1 +2p_2, c_1 = 10q_1and q_2 = 56 +2 p_1 - 4 p_2, c_2= 8 q_2

for firms I and II respectively.

(a) Derive the price reaction function for each firm on the assumption that each maximizes its profit with respect to its own price. Also, derive the slopes of reaction functions.

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To derive the price reaction functions, we need to maximize the profit of each firm with respect to its own price. We can do this by differentiating the profit function with respect to the firm's price and setting the derivative equal to zero.


For Firm I:

The profit function for Firm I is given by:

π_1 = (88 - 4p_1 + 2p_2 - 10q_1)q_1


Taking the derivative of π_1 with respect to p_1:

∂π_1/∂p_1 = -4q_1 + 2q_2


Setting the derivative equal to zero:

-4q_1 + 2q_2 = 0


Simplifying the equation, we get the price reaction function for Firm I:

p_1 = (1/2)q_2


The slope of the reaction function for Firm I is given by the coefficient of q_2, which is 1/2.


For Firm II:

The profit function for Firm II is given by:

π_2 = (56 + 2p_1 - 4p_2 - 8q_2)q_2


Taking the derivative of π_2 with respect to p_2:

∂π_2/∂p_2 = -4q_2 + 2q_1


Setting the derivative equal to zero:

-4q_2 + 2q_1 = 0


Simplifying the equation, we get the price reaction function for Firm II:

p_2 = (1/2)q_1


The slope of the reaction function for Firm II is given by the coefficient of q_1, which is 1/2.


(b) Determine the equilibrium values of price, quantity, and profit for each firm.



To determine the equilibrium values of price, quantity, and profit for each firm, we need to solve the system of equations formed by the price reaction functions of both firms.


Substituting the price reaction function of Firm I (p_1 = (1/2)q_2) into the price reaction function of Firm II, we get:

p_2 = (1/2)((1/2)q_2) = (1/4)q_2


Substituting this value of p_2 back into the price reaction function of Firm I, we have:

p_1 = (1/2)((1/4)q_2) = (1/8)q_2


Now, substituting these values of p_1 and p_2 into the demand functions, we can solve for the equilibrium quantities:

q_1 = 88 - 4((1/8)q_2) + 2q_2 = 88 - (1/2)q_2

q_2 = 56 + 2((1/8)q_2) - 4((1/4)q_2) = 56 + (1/4)q_2


Simplifying the equations, we get:

q_1 = 88 - (1/2)q_2

(3/4)q_2 = 56

q_2 = (4/3)*56 = 74.67


Substituting q_2 = 74.67 into the equation for q_1, we have:

q_1 = 88 - (1/2)(74.67) = 50.67


Finally, substituting the equilibrium quantities back into the price reaction functions, we can determine the equilibrium prices:

p_1 = (1/8)(74.67) = 9.33

p_2 = (1/4)(


50.67) = 12.67


To calculate the profits, we can substitute the equilibrium quantities and prices into the respective profit functions for each firm:

π_1 = (88 - 4(9.33) + 2(12.67) - 10(50.67))(50.67) = 381.25

π_2 = (56 + 2(9.33) - 4(12.67) - 8(74.67))(74.67) = 616.64


Therefore, the equilibrium values of price, quantity, and profit for Firm I are p_1 = 9.33, q_1 = 50.67, and π_1 = 381.25, respectively. Similarly, for Firm II, the equilibrium values are p_2 = 12.67, q_2 = 74.67, and π_2 = 616.64, respectively.




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