Class 11

Economics is the study of how people use scarce resources to satisfy unlimited wants. The word comes from the Greek "Oikonomikos" (household management). Adam Smith, Marshall and Robbins gave three famous definitions. Economics is divided into micro & macro, and positive & normative branches.

Demand is the quantity of a good buyers are willing and able to buy at each price; supply is the quantity sellers are willing and able to sell. The law of demand shows an inverse price-quantity relation; the law of supply shows a direct one. Market equilibrium occurs where Qd = Qs.

Elasticity measures how responsive quantity is to a change in price (or income, or related-good price). Price elasticity of demand Ed = %ΔQd / %ΔP. Types range from perfectly elastic (Ed=∞) to perfectly inelastic (Ed=0). Income elasticity and cross elasticity classify goods as normal, inferior, substitutes, complements.

Utility is the want-satisfying power of a commodity. The cardinal approach (Marshall, Pigou) treats utility as measurable in "utils"; the ordinal approach (Hicks, Allen) ranks bundles. Total utility rises as marginal utility is positive, peaks when MU=0, and falls when MU<0 — the Law of Diminishing Marginal Utility. Consumer equilibrium: MUx/Px = MUy/Py.

Production is the transformation of inputs (land, labour, capital, materials) into output. The production function Q = f(L, K, ...) is a technical relationship. In the short run, at least one factor is fixed — the Law of Variable Proportions operates with three stages (increasing, diminishing, negative returns). In the long run, all factors vary and the Laws of Returns to Scale (increasing, constant, decreasing) apply.

Macroeconomics studies the economy as a whole — aggregates like national income, total employment, and the general price level. It was developed after John Maynard Keynes published "The General Theory" in 1936. Nepal's economy is an open economy with significant remittance inflows, summarised by Y = C + I + G + (X − M).

National income is the total income earned by all individuals of a country in a year. The key concepts are GDP, GNP, NNP, NI, PI, DI and PCI. Nepal's GDP in FY 2080/81 was about Rs 5381.34 billion. GDP is measured in three ways — product, income, and expenditure — and the expenditure identity is Y = C + I + G + (X − M). Real GDP removes price-change effects via the GDP deflator.

Money evolved from barter to overcome its seven difficulties. Modern money serves as a medium of exchange, measure of value, store of value and standard of deferred payment. Fisher's Quantity Theory of Money (MV = PT) links money supply to the price level. Nepal's inflation rate in FY 2080/81 was about 7.9%, controlled by the Nepal Rastra Bank through monetary policy. e-Sewa and Khalti are popular forms of electronic money in Nepal.

Economic growth is a quantitative increase in real GNP; economic development is broader — growth plus improvement in quality of life (education, health, environment). Nepal is a developing country with HDI rank 143 and poverty rate 18.7%. Capital formation happens in three stages: saving → mobilisation of savings → investment, leading to higher output.

Nepal is a least developed country with GDP ≈ Rs 5381.34 billion, PCI ≈ US $1410, GDP growth ≈ 1.86%, remittance ≈ Rs 1007.31 billion (≈ 20.4% of GDP), agriculture ≈ 24.1% of GDP, inflation ≈ 7.9%, HDI ≈ 0.602 (rank 143), poverty ≈ 18.7%. Nepal is federal with seven provinces, each with its own economic profile. Heavy remittance dependence and a large trade deficit are key challenges.

Natural resources are gifts of nature — water, forest, land, minerals, air — that humans use to satisfy their wants. Nepal is the 2nd-richest country in water in the world (1st in Asia) with about 83,000 MW hydropower potential, has 45.31% of its area under forest, and is rich in minerals like limestone, iron, and marble. But mismanagement, deforestation, and climate change threaten these resources, so a sustainable management approach is essential.

Agriculture is the **backbone of the Nepalese economy** — it employs about **50.1%** of the labour force and contributes about **24.1%** of GDP. Nepalese agriculture is characterised by subsistence farming, traditional methods, small fragmented landholdings, low productivity, and geographical variation. Modernising requires irrigation, improved seeds, fertilizers, mechanisation, market access, and credit. Sources of agricultural finance include both formal (NRB, commercial banks, cooperatives) and informal (money lenders, friends) lenders. The agricultural market faces problems of middlemen, lack of storage, and poor transport; remedial measures include collection centres, cold stores, and market information systems.

An **industry** is a group of manufacturers that produce a particular good or service. In Nepal, industries are classified by fixed assets (micro, cottage, small, medium, large) and by nature of goods (agro-based, mineral, tourism, ICT). Modern industry began with the **Biratnagar Jute Mill (1936)** set up by Juddha Shamsher Rana — known as the "father of industry in Nepal". After 1990's liberalisation, the sector grew but still faces problems of power shortage, raw material imports, labour issues, and political instability. **Tourism** is another major industry — Nepal welcomed ~1.2 million tourists in 2023, supporting hotels, trekking, and pilgrimage; but the COVID-19 crash of 2020-21 (only ~150k tourists) showed how fragile the sector is.

**Transportation** moves people and goods from one place to another — roads (Mahendra Highway, north-south highways), air (Tribhuvan International Airport + domestic airports), ropeway, and railway (limited in Nepal). Transport promotes agriculture, industry, tourism, balanced regional development, and national integration. **Communication** is the exchange of information — postal services, telecom (NTC, Ncell), radio (FM), television, internet. Nepal's telecom and internet penetration has grown rapidly, but rural areas still lag. Both transport and communication are essential infrastructure for economic development.

Economics uses **mathematics and statistics** as quantitative tools to express relationships precisely, analyse data, and solve problems. **Basic mathematics** (addition, subtraction, multiplication, division) is the foundation; on top of it sit **arithmetic, geometry, algebra, and calculus**. Mathematics helps economists (1) study cause-effect relationships, (2) analyse three or more values, (3) convert sentences into symbols, (4) express economic phenomena algebraically, (5) find slopes of curves, (6) study marginal and total concepts, and (7) solve linear and non-linear programming problems. Key equations include the linear demand function Qd = a − bP, the slope formula m = Δy/Δx, and the marginal cost definition MC = dTC/dQ.