Mod 8: Schools of Economic Thought, Famous Economists, Laws & Books

📖 Chapter 1 🧩 Module 9 of 11 ⏱️ ~7 min read 💡 22 MCQs

Topic Part 1 of 2

Concept

8.1 Schools of economic thought: from mercantilism to supply-side economics

🏫 School level · NCERT Class 9–12 (the base for UPSC, BPSC, SSC and Bank exams)

Each school answered the crisis of its own time

Economic ideas came in waves, each reacting to the problems of its time. Exams ask the school, its key idea, its main thinker and his book.

Fig 8.1 Main schools of economic thought in order of appearance.

Table 8.1 Schools, ideas, thinkers and books
School	Key idea	Thinkers and books
Mercantilism	A nation’s wealth is its stock of gold and silver; aim for a favourable balance of trade (exports > imports); protect home industry	Thomas Mun (England’s Treasure by Forraign Trade, 1664); Colbert in France
Physiocrats	Only land (agriculture) yields a net product; natural order; laissez-faire	François Quesnay (Tableau Économique, 1758), Turgot
Classical	Division of labour, invisible hand, free trade, Say’s Law, labour theory of value, comparative advantage	Adam Smith (Wealth of Nations, 1776); David Ricardo (Principles of Political Economy and Taxation, 1817); Malthus; J. B. Say; J. S. Mill
Marxian	Workers create surplus value that capitalists take as profit; class struggle; capitalism will give way to socialism	Karl Marx (Das Kapital, vol. 1, 1867; Communist Manifesto with Engels, 1848)
Neoclassical (marginalist)	Value depends on marginal utility; demand and supply; equilibrium; welfare	Jevons, Menger, Walras (1870s “marginal revolution”); Alfred Marshall (Principles of Economics, 1890); A. C. Pigou (welfare economics)
Keynesian	Output and jobs depend on effective demand; government spending in slumps; the multiplier	J. M. Keynes (General Theory, 1936); R. F. Kahn (employment multiplier, 1931)
Monetarist	“Inflation is always and everywhere a monetary phenomenon”; steady growth of money supply; limits of fiscal activism	Milton Friedman (A Monetary History of the United States, with Anna Schwartz, 1963; Nobel 1976)
Supply-side	Lower tax rates raise work, saving and investment; beyond a point higher tax rates reduce revenue (Laffer curve)	Arthur Laffer; policies of the 1980s (“Reaganomics”)

📘 Smith’s pin factory

Smith opened The Wealth of Nations with a pin factory: one worker alone could make perhaps 20 pins a day, but ten workers each doing one step made about 48,000 a day together. Division of labour raises productivity through skill, saving of time and use of machines; it is limited by the extent of the market.

⭐ Key Points for Exams

Mercantilism: gold and silver, favourable trade balance.
Physiocrats (Quesnay): land alone productive.
Classical: Smith 1776, Ricardo 1817 (comparative advantage), Say’s Law.
Marx: surplus value; neoclassical: marginal utility (Jevons, Menger, Walras, Marshall).
Keynes 1936 (multiplier via Kahn 1931); Friedman monetarism; Laffer supply-side.

📌 Quick-Fire One-Liners

Who gave comparative advantage? Answer: David Ricardo
Which school said only land is productive? Answer: The Physiocrats
Who is linked with monetarism? Answer: Milton Friedman

Topic

Questions

MCQs

Answer this question, then use Next.

[School] Mercantilists measured the wealth of a nation mainly by its:

Mercantilism (about 1500–1750) saw precious metals as wealth and sought a favourable balance of trade to bring gold in. Adam Smith attacked this view in 1776, arguing that wealth is the goods and services a nation can produce.

[SSC pattern] According to the Physiocrats, the only productive sector was:

Quesnay and the Physiocrats believed only land yields a “net product” (surplus); manufacturing and trade merely transform or move it. They also popularised laissez-faire.

[SSC pattern] The theory of comparative advantage in international trade was given by:

Ricardo (Principles of Political Economy and Taxation, 1817) showed with the England–Portugal cloth and wine example that both countries gain by specialising in what they produce at a lower opportunity cost. Smith gave absolute advantage.

[School] Adam Smith explained the division of labour with the example of a:

In Book I of The Wealth of Nations, ten workers splitting pin-making into separate steps produced about 48,000 pins a day, against perhaps 20 by one worker alone. The car assembly line came with Henry Ford in 1913.

[BPSC pattern] The theory of “surplus value” is associated with:

Marx argued that workers produce more value than the wage they receive; the difference (surplus value) is taken by capitalists as profit. It is the core of Das Kapital.

[SSC pattern] The “marginal revolution” of the 1870s is associated with:

Working independently, Jevons (England), Menger (Austria) and Walras (Switzerland/France) explained value by marginal utility, starting neoclassical economics, which Marshall later systematised.

[UPSC level] Monetarism, associated with Milton Friedman, holds that:

Friedman’s line: “Inflation is always and everywhere a monetary phenomenon.” Monetarists favoured steady, rule-based growth of money and were sceptical of active fiscal policy. He won the Nobel in 1976.

[Bank PO pattern] The concept of the multiplier was first introduced (as the employment multiplier) by:

Richard Kahn published the employment multiplier in 1931; Keynes built the investment multiplier into the General Theory (1936): an increase in investment raises income by a multiple, k = 1 / (1 − MPC).

Question 1 of 8

One-liners

Write your answer, then submit to see the correct answer.

Who gave comparative advantage?

David Ricardo

Which school said only land is productive?

The Physiocrats

Who is linked with monetarism?

Milton Friedman

Question 1 of 3

Topic Part 1 of 2

Concept

8.2 Laws, curves, Indian thinkers and Nobel laureates

🏫 School level · NCERT Class 9–12 (the base for UPSC, BPSC, SSC and Bank exams)

The names and one-line ideas that objective papers love

Table 8.2 Laws and curves that exams ask
Law / curve	Statement	Name
Say’s Law	Supply creates its own demand	J. B. Say
Gresham’s Law	Bad money drives good money out of circulation	Thomas Gresham
Engel’s Law	As income rises, the share of income spent on food falls	Ernst Engel
Law of diminishing marginal utility	Each extra unit of a good gives less additional satisfaction	H. H. Gossen; Marshall
Phillips curve	Short-run inverse relation between inflation (wage growth) and unemployment	A. W. Phillips (1958)
Laffer curve	Tax revenue first rises then falls as the tax rate rises	Arthur Laffer
Okun’s Law	Unemployment rises when output grows below its potential (an output gap)	Arthur Okun
Kuznets curve	Inequality first rises, then falls as per capita income grows (inverted U)	Simon Kuznets

Table 8.3 Indian economic thinkers
Thinker	Contribution
Kautilya (Chanakya)	Arthashastra: statecraft, taxation, trade, labour (about 4th century BCE)
Dadabhai Naoroji	Drain of wealth theory; first estimate of India’s per capita income; Poverty and Un-British Rule in India (1901)
R. C. Dutt	The Economic History of India (two volumes, 1902–04): critique of British economic policy
M. K. Gandhi	Swadeshi, village self-sufficiency, trusteeship (the rich hold wealth as trustees for society)
M. Visvesvaraya	Planned Economy for India (1934); father of Indian planning
P. C. Mahalanobis	Founded the Indian Statistical Institute (1931); model of the Second Plan; father of Indian statistics
B. R. Ambedkar	The Problem of the Rupee (1923); ideas that fed into the Hilton Young Commission and the RBI
Amartya Sen	Welfare economics, capability approach, famines (Poverty and Famines, 1981); Nobel 1998; Bharat Ratna 1999
Abhijit Banerjee	Nobel 2019 with Esther Duflo and Michael Kremer for an experimental approach to fighting global poverty

🏅 Nobel Memorial Prize in Economic Sciences

Officially the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel, set up by Sweden’s central bank in 1968 and first awarded in 1969 to Ragnar Frisch and Jan Tinbergen. Indian-born winners: Amartya Sen (1998) and Abhijit Banerjee (2019).

⭐ Key Points for Exams

Gresham: bad money drives out good. Engel: food share falls as income rises.
Phillips: inflation vs unemployment (short run). Laffer: tax rate vs revenue. Okun: output gap vs unemployment.
First economics Nobel 1969: Frisch and Tinbergen. Indian-born: Sen 1998, Banerjee 2019.
Mahalanobis: ISI 1931, Second Plan; 29 June is Statistics Day.

📌 Quick-Fire One-Liners

Who founded the ISI? Answer: P. C. Mahalanobis
Which curve links tax rate and revenue? Answer: The Laffer curve
Gandhi’s idea of the rich as trustees is called? Answer: Trusteeship

Topic

Questions

MCQs

Answer this question, then use Next.

[SSC pattern] The first Nobel Memorial Prize in Economic Sciences (1969) was awarded to:

Frisch (Norway) and Tinbergen (Netherlands) won for dynamic models of economic processes. Samuelson won in 1970, Friedman in 1976. Keynes died in 1946, before the prize existed.

[SSC pattern] Abhijit Banerjee shared the 2019 Nobel Prize in Economics with:

The 2019 prize was “for their experimental approach to alleviating global poverty” using randomised controlled trials. Amartya Sen won alone in 1998.

[SSC pattern] “Bad money drives good money out of circulation” is known as:

When two coins have the same face value but different metal content, people hoard the better (good) coin and spend the debased (bad) one. Named after Sir Thomas Gresham (16th century).

[Bank PO pattern] The Laffer curve shows the relation between:

At 0% and at 100% tax rates revenue is zero; somewhere in between revenue is maximum. Beyond that point, raising rates lowers revenue. Inflation–unemployment is the Phillips curve; income–inequality is the Kuznets curve.

[RBI Grade B level] The Phillips curve shows, in the short run, a/an:

A. W. Phillips (1958) found that in the UK wage inflation was high when unemployment was low. Friedman and Phelps showed that the trade-off disappears in the long run (vertical long-run Phillips curve at the natural rate).

[BPSC pattern] Gandhi’s concept of “trusteeship” means that:

Trusteeship is a non-violent alternative to both capitalism and state socialism: owners keep their property but use it for the common good. It is part of Gandhian economics with swadeshi and village self-sufficiency.

[UPSC level] Engel’s Law states that as a family’s income rises:

Ernst Engel (1857) found that food spending rises with income, but more slowly, so its share falls. That is why the weight of food in India’s CPI is reviewed as incomes rise.

[SSC pattern] The Indian Statistical Institute (1931) was founded by:

Mahalanobis founded the ISI in Kolkata and is called the father of Indian statistics; 29 June, his birthday, is Statistics Day in India. V. K. R. V. Rao made the first scientific estimate of national income (1931–32).

Question 1 of 8

One-liners

Write your answer, then submit to see the correct answer.

Who founded the ISI?

P. C. Mahalanobis

Which curve links tax rate and revenue?

The Laffer curve

Gandhi’s idea of the rich as trustees is called?

Trusteeship

Question 1 of 3

Topic Part 1 of 2

Concept

🎯 Competitive Level (UPSC Pre · BPSC Pre · State PSC · SSC · Bank PO · RBI Grade B): Thinkers, laws and their policy use

Exam map
Exam	What it asks from this module
UPSC Prelims	ideas behind policy (Keynesian stimulus, monetarism, Laffer); drain theory in modern history
BPSC / State PSC	books and authors, Indian thinkers, Gandhian economics
SSC / Railways	who said what, which law, Nobel winners
Bank PO / RBI Grade B	Phillips curve, Okun’s law, monetarism vs Keynesianism, Laffer curve

🏛️ BPSC / State PSC pattern

Match the list

Match: A. Drain of wealth B. Trusteeship C. Capability approach D. Second Plan model — 1. Amartya Sen 2. P. C. Mahalanobis 3. Dadabhai Naoroji 4. M. K. Gandhi

Drain → Naoroji; trusteeship → Gandhi.
Capability → Sen; Second Plan → Mahalanobis.

A-3, B-4, C-1, D-2

🏆 UPSC-style practice (concept question, not a past paper)

Statement type

Consider: 1. Keynes recommended deficit spending by the government during a depression. 2. Monetarists hold that inflation is mainly caused by excessive growth of money supply. 3. The Laffer curve suggests that raising tax rates always raises tax revenue. Which are correct?

1 correct: borrowing to spend raises demand in a slump.
2 correct: Friedman’s view.
3 wrong: beyond a point higher rates reduce revenue.

1 and 2 only

🛠️ SSC / Railways quick practice

Quick practice

Who wrote: (i) Principles of Political Economy and Taxation (ii) Das Kapital (iii) The Economic History of India (iv) The Problem of the Rupee?

(i) David Ricardo, 1817 (ii) Karl Marx, 1867
(iii) R. C. Dutt (iv) B. R. Ambedkar, 1923

Ricardo, Marx, R. C. Dutt, Ambedkar

🏦 Bank PO / RBI Grade B angle

Central banks still use these ideas. The Phillips curve trade-off (lower unemployment with higher inflation) holds only in the short run; Friedman and Phelps argued that in the long run unemployment returns to its natural rate whatever the inflation, which is one reason modern central banks, including the RBI, target inflation directly.

⭐ Key Points for Exams

Drain theory: Naoroji; Economic History of India: R. C. Dutt.
Friedman: inflation is always a monetary phenomenon.
Ambedkar: The Problem of the Rupee (1923).

📌 Quick-Fire One-Liners

Who wrote The Problem of the Rupee? Answer: B. R. Ambedkar

Topic

Questions

MCQs

Answer this question, then use Next.

[BPSC pattern] The “drain of wealth” theory was put forward by:

Naoroji argued that Britain drained India’s wealth through home charges, salaries and pensions of British officials, and profits sent abroad. R. C. Dutt and M. G. Ranade supported the critique.

[UPSC style] Consider: 1. Keynes recommended deficit spending in a depression. 2. Monetarists link inflation mainly to money supply growth. 3. The Laffer curve says higher tax rates always raise revenue. Which are correct?

Statement 3 is the opposite of the Laffer idea: beyond the revenue-maximising rate, higher rates reduce revenue. Statements 1 and 2 are correct descriptions of the Keynesian and monetarist views.

[RBI Grade B level] “Inflation is always and everywhere a monetary phenomenon” was said by:

It is Friedman’s famous line from the 1960s–70s monetarist debate. Irving Fisher gave the quantity theory equation MV = PT, which monetarism builds on.

[SSC pattern] “The Economic History of India” (1902–04) was written by:

Romesh Chunder Dutt, a former ICS officer, documented how British policy hurt Indian industry and agriculture. Naoroji wrote Poverty and Un-British Rule in India; Ambedkar wrote The Problem of the Rupee.

[Bank PO pattern] Okun’s Law relates:

Arthur Okun observed that when real GDP grows more slowly than its potential, unemployment rises (in his 1962 US estimate, each 1-point rise in unemployment went with roughly 3% lower output relative to potential; later estimates are smaller).

[BPSC pattern] Which pair is correctly matched?

Ambedkar’s The Problem of the Rupee: Its Origin and Its Solution (1923) analysed India’s currency. Smith wrote The Wealth of Nations, Marx Das Kapital, Keynes the General Theory, Ricardo Principles of Political Economy and Taxation.

Question 1 of 6

One-liners

Write your answer, then submit to see the correct answer.

Who wrote The Problem of the Rupee?

B. R. Ambedkar

Question 1 of 1