All 8 questions from UPSC Civil Services Mains Economics 2023 Paper I (400 marks total). Every stem reproduced in full, with directive-word analysis, marks, word limits, and answer-approach pointers.
8Questions
400Total marks
2023Year
Paper IPaper
Topics covered
Microeconomics and macroeconomics concepts (1)Market structure and oligopoly models (1)Macroeconomic policy and Keynesian economics (1)Monetary economics and international finance (1)International trade and development economics (1)International trade theory and policy (1)Economic growth models (1)Environmental economics and development strategy (1)
A
Q1
50M150wCompulsoryexamineMicroeconomics and macroeconomics concepts
Answer the following questions in about 150 words each:
(a) Examine the role of price elasticity of demand in determining the price set by a discriminating monopolist. (10 marks)
(b) Explain the backward bending supply curve of labour as a choice between income and leisure. (10 marks)
(c) Explain the major differences between classical and Keynesian macroeconomics. (10 marks)
(d) What is meant by internal rate of return in the theory of investment? What is its importance in deciding whether to accept investment project? (10 marks)
(e) Explain why it is considered difficult for open market operations to affect both the availability and cost of credit at the same time. (10 marks)
हिंदी में पढ़ें
निम्नलिखित प्रत्येक प्रश्न का उत्तर लगभग 150 शब्दों में दीजिए :
(a) एक विभेदात्मक एकाधिकारी द्वारा कीमत-निर्धारण में माँग की कीमत-लोच की भूमिका का परीक्षण कीजिए। (10 अंक)
(b) आय एवं अवकाश के बीच चुनाव के संदर्भ में, पीछे की ओर झुके हुए श्रम के पूर्ति वक्र की व्याख्या कीजिए। (10 अंक)
(c) प्रतिष्ठित एवं कैंजीय समष्टि अर्थशास्त्र की प्रमुख भिन्नताओं की व्याख्या कीजिए। (10 अंक)
(d) निवेश-सिद्धान्त के अन्तर्गत आन्तरिक-प्रतिफल-दर का क्या अर्थ है? किसी निवेश परियोजना को स्वीकार करना है, यह निर्णय लेने में इसका क्या महत्व है? (10 अंक)
(e) समझाइए कि खुले बाजार की क्रियाओं के द्वारा साख की उपलब्धता एवं लागत दोनों को एक ही समय पर प्रभावित करना क्यों कठिन माना जाता है? (10 अंक)
Answer approach & key points
Framework: Micro/Macro Theory & Policy. (a) examine: intro > how/why with reasoning > evidence > conclusion | (b) explain: definition/context > points in order > small example > short close | (c) explain: definition/context > points in order > small example > short close | (d) explain: definition/context > points in order > small example > short close | (e) explain: definition/context > points in order > small example > short close Full marks: Clear definitions, logical reasoning, correct application of economic models, and relevant examples.
Equate MR in each market to common MC: MR1 = MR2 = MC
MR = P(1 − 1/|e|), so the price is higher where demand is less elastic
Pricing occurs where |e| > 1; equal elasticities give no gain
Elasticity decides whether and how prices differ
Choice between income and leisure
Substitution effect increases work hours
Income effect reduces hours if leisure is normal
Curve bends backward once the income effect dominates
Say's law versus effective demand
Flexible versus rigid wages and prices
Saving-investment adjustment and role of money
Laissez-faire versus fiscal policy; full versus under-employment
IRR is the rate at which NPV is zero
Accept if IRR exceeds cost of capital or interest rate
Ranking of projects and the investment demand schedule
Limitations: reinvestment assumption, multiple IRRs, conflict with NPV
OMO raise or lower reserves and yields
Quantity and price targets conflict
Weak transmission from bond yields to lending rates
(a) Explain the Cournot model of duopoly using reaction functions and interpret it as a Nash equilibrium. (20 marks)
(b) "Perfect competition is incompatible with increasing returns to scale." Examine the statement. (15 marks)
(c) Describe a model of oligopoly that explains price stickiness. (15 marks)
हिंदी में पढ़ें
(a) प्रतिक्रिया फलनों का प्रयोग करते हुए कुर्नों के द्वयधिकार मॉडल की व्याख्या कीजिए तथा इसका नैश-संतुलन के रूप में निर्वचन कीजिए। (20 अंक)
(b) "पूर्ण-प्रतियोगिता, पैमाने के बढ़ते प्रतिफल के साथ असंगत है।" इस कथन का परीक्षण कीजिए। (15 अंक)
(c) अल्पाधिकार के एक ऐसे मॉडल की व्याख्या कीजिए जो निश्चल-कीमत की व्याख्या करता है। (15 अंक)
Answer approach & key points
Framework: Cournot Duopoly Model. (a) explain: definition/context > points in order > small example > short close | (b) examine: intro > how/why with reasoning > evidence > conclusion | (c) describe: define > structure or process in order > labelled diagram > significance Full marks: Rigorous derivation, clear diagrams, precise interpretation, and strong logical flow.
Assumptions: homogeneous product, simultaneous quantity choice; linear demand
Reaction functions q1 = (a − c − bq2)/2b and symmetric q2
Equilibrium q* = (a − c)/3b each, Q* = 2(a − c)/3b, P* = (a + 2c)/3
Nash interpretation: mutual best responses, stability; comparison with monopoly and competition
Internal increasing returns: LMC < LAC, P = LMC gives loss
Firms expand and the market moves to natural monopoly
External economies and small minimum efficient scale are compatible
Reasoned conclusion on when the statement holds
Sweezy's kinked demand curve and asymmetric rival reaction
Elastic demand above the kink and inelastic below
Vertical gap in marginal revenue; stable price for cost changes
50MexplainMacroeconomic policy and Keynesian economics
(a) "Under rational expectation hypothesis, systematic monetary policy is ineffective." Explain the above statement using a suitable model. (20 marks)
(b) In the IS-LM framework, the effectiveness of monetary and fiscal policies depend on the interest elasticity of investment. Explain. (15 marks)
(c) How important is speculative demand for money in achieving unemployment equilibrium in the Keynesian model? Discuss. (15 marks)
हिंदी में पढ़ें
(a) "तार्किक प्रत्याशा-परिकल्पना के अंतर्गत, नियमित मौद्रिक नीति निष्प्रभावी होती है।" एक उचित मॉडल के द्वारा उपर्युक्त कथन की व्याख्या कीजिए। (20 अंक)
(b) IS-LM ढांचे के अंतर्गत मौद्रिक एवं राजकोषीय नीतियों की प्रभावशीलता, निवेश की ब्याज-लोच पर निर्भर करती है। समझाइए। (15 अंक)
(c) कैंजीय मॉडल के अंतर्गत, बेरोजगारी-संतुलन प्राप्त करने में मुद्रा की सट्टा-जनित मांग का क्या महत्व है? चर्चा कीजिए। (15 अंक)
Answer approach & key points
Framework: Keynesian Macroeconomics. (a) explain: definition/context > points in order > small example > short close | (b) explain: definition/context > points in order > small example > short close | (c) discuss: intro > 3-4 dimensions > example > balanced close Full marks: Rigorous model derivation, clear diagrams, and precise economic reasoning.
Rational expectations: no systematic forecast errors
Lucas supply function with demand y = m − p
Only the surprise component m − E(m) affects output
Policy ineffectiveness; critique by New Keynesians and Lucas critique
IS slope depends on b: low b steep, high b flat
Multipliers dY/dG and dY/d(M/P) with b
Low b favours fiscal policy; high b favours monetary policy
Crowding out and extreme cases
Liquidity preference: transactions and speculative demand
Liquidity trap makes monetary policy ineffective
Other causes: interest-inelastic investment, low MEC, wage rigidity
Judgement: important but not necessary; Pigou effect
50MexplainMonetary economics and international finance
(a) Explain the concept of "sterilization" in the context of monetary approach to balance of payments. (20 marks)
(b) Tax burden is distributed between buyers and sellers in the ratio of elasticities of demand and supply. Explain. (15 marks)
(c) Discuss Friedman's restatement of Quantity Theory of Money. Under what conditions, it reduces to classical Quantity Theory of Money? Explain. (15 marks)
हिंदी में पढ़ें
(a) भुगतान-संतुलन के मौद्रिक दृष्टिकोण के संदर्भ में, "स्टरिलाइजेशन" की अवधारणा की व्याख्या कीजिए। (20 अंक)
(b) क्रेताओं और विक्रेताओं के मध्य कर-भार मांग और पूर्ति लोचों के अनुपात में वितरित होता है। व्याख्या कीजिए। (15 अंक)
(c) फ्रिडमैन के मुद्रा-परिमाण-सिद्धांत के पुनर्कथन की विवेचना कीजिए। यह किन दशाओं में, प्रतिष्ठित मुद्रा-परिमाण-सिद्धांत में परिवर्तित हो जाता है? समझाइए। (15 अंक)
Answer approach & key points
Framework: Monetary Approach to Balance of Payments (Mundell-Fleming). (a) explain: definition/context > points in order > small example > short close | (b) explain: definition/context > points in order > small example > short close | (c) discuss: intro > 3-4 dimensions > example > balanced close Full marks: Rigorous derivation, clear diagrams, and precise economic terminology.
50M150wCompulsoryexamineInternational trade and development economics
Answer the following questions in about 150 words each:
(a) "Factor intensity reversal is incompatible with Heckscher-Ohlin model." Examine this statement. (10 marks)
(b) Why depreciation of a currency is inflationary? Explain. (10 marks)
(c) Can Kuznet's hypothesis of an inverted U-curve be extended to analyse environmental degradation? Explain. (10 marks)
(d) Explain how modified HDI is an improved measure of development over HDI. (10 marks)
(e) How renewable energy use can help attain environmental sustainability? Explain. (10 marks)
हिंदी में पढ़ें
निम्नलिखित प्रत्येक प्रश्न का उत्तर लगभग 150 शब्दों में दीजिए :
(a) "कारक तीव्रता उत्क्रमण हेक्शर-ओहलिन मॉडल से असंगत है।" इस कथन का परीक्षण कीजिए। (10 अंक)
(b) किसी करेंसी का मूल्यह्रास स्फीतिक क्यों होता है? समझाइए। (10 अंक)
(c) क्या कुज़नेट के एक उल्टे U-वक्र की परिकल्पना पर्यावरणीय अवक्षरण के विश्लेषण के लिए प्रयुक्त हो सकती है? व्याख्या कीजिए। (10 अंक)
(d) समझाइए कि संशोधित एच.डी.आई. किस प्रकार एच.डी.आई. की अपेक्षा विकास की एक उन्नत माप है। (10 अंक)
(e) नवीनीकरणीय ऊर्जा उपयोग किस प्रकार पर्यावरणीय पोषणीयता प्राप्त करने में सहायक है? समझाइये। (10 अंक)
Answer approach & key points
Framework: Heckscher-Ohlin Model. (a) examine: intro > how/why with reasoning > evidence > conclusion | (b) explain: definition/context > points in order > small example > short close | (c) explain: definition/context > points in order > small example > short close | (d) explain: definition/context > points in order > small example > short close | (e) explain: definition/context > points in order > small example > short close Full marks: Clear, concise, and accurate with all required elements and some bonus points.
Meaning of FIR: same good capital- or labour-intensive at different factor prices
H-O assumes a fixed intensity ranking
With FIR, the trade theorem and factor price equalisation can fail
Judgement: a limitation, not a refutation; evidence is mixed
Imported goods and fuel become dearer
Imported inputs raise costs (cost-push)
Export and import-substitution demand raises prices
Expectations and wage-price spiral; factors moderating pass-through
Environmental Kuznets Curve: pollution rises then falls with income
Scale, composition and technique effects
Evidence mixed: local versus global pollutants
Turning point depends on policy and institutions
Geometric mean instead of arithmetic mean
Better indicators: mean and expected years of schooling, GNI per capita
Inequality-adjusted HDI, GDI and MPI
Remaining limitations
Substitutes fossil fuels and cuts emissions and pollution
(a) Consider the market for good X for Country 1 and Country 2. The supply and demand functions for Country 1 are given as P = Q + 70 and P = 170 – Q, while that of Country 2 are given as P = 10 + Q and P = 110 – Q. Assume that there are two countries in the world and trade is balanced. Free trade price is stabilized in between autarky prices of both the countries. Based on the above information, answer the following questions:
(i) From the free trade price and zero transportation cost, if the importing country imposes an import quota of 50 units, determine the quantity of good X produced and consumed. Calculate the consumer and producer surplus and protection cost due to import quota.
(ii) From the free trade price, assume that the importing country is small and consider an import tariff of Rs. 10 per unit on good X. Calculate the impact on consumer surplus, producer surplus and government revenue. Does this policy increase national welfare? (20 marks)
(b) "A continuous process of innovation and invention would give rise to trade even between countries with similar factor endowments and tastes." Examine the statement. (15 marks)
(c) Examine the significance of external economies and product variety in the context of international trade theory. (15 marks)
हिंदी में पढ़ें
(a) वस्तु X का बाजार देश 1 तथा देश 2 में है। देश 1 में पूर्ति व माँग फलन क्रमशः: P = Q + 70 तथा P = 170 – Q है जब कि देश 2 में पूर्ति व माँग फलन क्रमशः: P = 10 + Q तथा P = 110 – Q है। मान लीजिए कि विश्व में केवल ये दो देश ही हैं तथा उनका व्यापार संतुलित है। स्वतंत्र व्यापार कीमत दोनों देशों के व्यापार से पहले की कीमतों के मध्य स्थित होगी। उपर्युक्त सूचना को संज्ञान में लेते हुए, निम्न प्रश्नों का उत्तर दीजिए:
(i) स्वतंत्र व्यापार कीमत एवं शून्य परिवहन लागत पर, यदि आयातक देश 50 इकाइयों का आयात-अभ्यर्थ लगाता है तो वस्तु X के उत्पादन एवं उपयोग की मात्रा ज्ञात कीजिए। आयात-अभ्यर्थ लगाने से उपभोक्ता अतिरेक, उत्पादक अतिरेक तथा संरक्षण लागत आगणित कीजिए।
(ii) यदि आयातक-देश छोटा है तथा स्वतंत्र-व्यापार कीमत पर वस्तु X पर 10 रु. प्रति इकाई का प्रशुल्क लगाता है तो इसका प्रभाव उपभोक्ता-अतिरेक उत्पादक-अतिरेक तथा राजकीय-आगम पर ज्ञात कीजिए। क्या यह नीति राष्ट्रीय कल्याण में वृद्धि करती है? (20 अंक)
(b) "नवाचार व आविष्कार की सतत प्रक्रिया से उन देशों के बीच भी व्यापार प्रारम्भ हो जाता है जिनकी कारक निधियां तथा रुचियां समान हैं।" कथन का परीक्षण कीजिये। (15 अंक)
(c) अन्तर्राष्ट्रीय व्यापार सिद्धान्त के सन्दर्भ में, बाह्य मितव्ययिताओं तथा उत्पाद विविधता के महत्व का परीक्षण कीजिए। (15 अंक)
Answer approach & key points
Framework: Partial-equilibrium welfare analysis of a quota and a tariff; New Trade Theory for (b) and (c). (a) calculate: given > formula > substitution > result with units > interpretation | (b) examine: intro > how/why with reasoning > evidence > conclusion | (c) examine: intro > how/why with reasoning > evidence > conclusion Full marks: All figures right with working and diagram; (b) and (c) argue from named models to a verdict.
Autarky prices 120 and 60; free-trade price ₹90, trade 60 units
Free-trade CS 3,200 and PS 200; consumption 80, production 20
Quota 50: price ₹95, consume 75, produce 25, CS 2,812.50, PS 312.50, deadweight loss ₹25, quota rent
(a) Human capital and components of research and development are determining factors of economic growth. Explain using appropriate endogenous growth model. (20 marks)
(b) Explain the concept of steady-state in the context of Solow model. (15 marks)
(c) What is the golden rule of capital accumulation? Explain it using a growth model. (15 marks)
हिंदी में पढ़ें
(a) मानव-पूँजी तथा शोध एवं विकास के अवयव आर्थिक संवृद्धि के निर्धारक कारक हैं। यथोचित अन्तर्जात संवृद्धि मॉडल का प्रयोग करते हुए व्याख्या कीजिए। (20 अंक)
(b) सोलो मॉडल के सन्दर्भ में, स्थिर-अवस्था अवधारणा की व्याख्या कीजिए। (15 अंक)
(c) पूँजी संचयन का स्वर्णिम-सिद्धान्त क्या है? एक संवृद्धि मॉडल का प्रयोग करते हुए इसे समझाइए। (15 अंक)
Answer approach & key points
Framework: Endogenous Growth Theory (Romer/Acemoglu) and Solow-Swan Model. (a) explain: definition/context > points in order > small example > short close | (b) explain: definition/context > points in order > small example > short close | (c) explain: definition/context > points in order > small example > short close Full marks: Rigorous derivation, clear diagrams, named economists, policy links
Endogenous growth: knowledge non-rival, no diminishing returns
Romer: dA/dt = δH_A A, g = δH_A
Implications: human capital, R&D, patents, increasing returns, policy effects
50Mcritically examineEnvironmental economics and development strategy
(a) How important is rent from extraction of renewable and non-renewable resources to distinguish between Net Domestic Product (NDP) and Environmentally adjusted Domestic Product (EDP). Will the distinction be valid if we have an economy with only renewable resources and the economy reaches the point of maximum sustainable yield? (20 marks)
(b) "Balanced and unbalanced growth strategies are not substitutes but complementary to each other." Discuss. (15 marks)
(c) "Income inequality is not a cause of concern as long as per capita income is rising." Critically examine this statement. (15 marks)
हिंदी में पढ़ें
(a) नवीनीकरणीय व गैर-नवीनीकरणीय संसाधनों के विदोहन से उत्पन्न लगान, शुद्ध घरेलु उत्पाद (एन.डी.पी.) एवं पर्यावरण-समायोजित उत्पाद (ई.डी.पी.) में भेद करने के लिये कितना महत्वपूर्ण है? यदि अर्थ व्यवस्था में केवल नवीनीकरणीय संसाधन हों तथा अर्थव्यवस्था अधिकतम-धारणीय उत्पादन के बिन्दु पर पहुँच गई हो, तो भी क्या यह विभेद मान्य होगा? (20 अंक)
(b) "संतुलित व असंतुलित संवृद्धि-रणीतियों एक दूसरे की प्रतिस्थापक नहीं अपितु पूरक हैं।" चर्चा कीजिए। (15 अंक)
(c) "आय-असमानता चिंता का कारण नहीं है जब तक कि प्रति व्यक्ति आय में वृद्धि हो रही है।" इस कथन का आलोचनात्मक परीक्षण कीजिए। (15 अंक)
Answer approach & key points
Framework: Environmental Economics & Development Theory. (a) explain: definition/context > points in order > small example > short close | (b) discuss: intro > 3-4 dimensions > example > balanced close | (c) critique: the claim > its strengths > its weaknesses > your judgment Full marks: Rigorous application of economic models, clear distinction of concepts, and strong critical analysis with relevant examples.
NDP deducts only produced-capital depreciation; EDP also deducts natural-capital depletion
Rent as the measure of depletion: net price and El Serafy user cost; Hartwick rule
Renewables: depletion arises only when harvest exceeds regeneration
At MSY depletion is zero so EDP equals NDP; concept still valid
Balanced growth: big push and demand complementarity
Unbalanced growth: Hirschman linkages
Complementarity: minimum balance plus selective imbalance