A rise in general level of prices may be caused by 1. An increase in the money supply 2. A decrease in the aggregate level of output 3. An increase in the effective demand Select the correct answer using the codes given below:
Contents16
- A1 only
- B1 and 2 only
- C2 and 3 only
- D1, 2 and 3
Show answer
Answer: (D) 1, 2 and 3
All three statements are correct — each represents a different cause of inflation.
Statement 1 — An increase in money supply causes inflation because more money chases the same quantity of goods, pushing prices up (this is demand-pull inflation / monetary inflation).
Statement 2 — A decrease in aggregate output means fewer goods are available while demand remains the same, so prices rise (this is supply-side / cost-push inflation).
Statement 3 — An increase in effective demand means people are willing and able to buy more goods at existing prices, which pushes prices upward (demand-pull inflation).
Together, statements 1 and 3 represent the demand side, and statement 2 represents the supply side of inflation.
Inflation can arise from both demand-side factors (more money supply, higher effective demand) and supply-side factors (reduced output availability).
UPSC tests whether students can distinguish between demand-pull inflation (statements 1 and 3) and cost-push inflation (statement 2) as the two fundamental drivers of price rise.
Causes of Inflation
Indian Economy rise in general level of prices money supply aggregate level of output effective demand
Causes of Inflation: Demand-Side vs Supply-Side Factors
Inflation = sustained rise in general price level across the economy
Three main causes: excess money supply, reduced output, increased effective demand
Demand-pull: too much money chasing too few goods
Cost-push: reduced supply pushes prices up
What is Inflation
Inflation occurs when the general price level rises across an economy — not just individual goods becoming expensive, but widespread price increases. UPSC tests inflation through its causes, which fall into demand-side and supply-side categories.
Inflation Causes
Cause | Mechanism | Type | Example |
|---|---|---|---|
Increased Money Supply | More money chases same goods | Demand-pull | RBI prints excess currency |
Decreased Output | Fewer goods available for same demand | Cost-push | Crop failure reduces food supply |
Increased Effective Demand | People willing to buy more at current prices | Demand-pull | Income rises, consumption increases |
Key Mechanisms
Effective demand = desire + purchasing power to buy goods
Aggregate output refers to total production in the economy
Both demand-side causes (statements 1 & 3) and supply-side causes (statement 2) can trigger inflation
Monetary inflation specifically refers to price rises due to excess money supply
Multiple causes can operate simultaneously in real economies
Trap: Students often think only money supply increase causes inflation — but output decrease and demand increase also cause it
Trap: Confusing effective demand with just desire — it requires both willingness AND ability to pay
Trap: Missing that all three statements are correct — each represents a valid inflation cause
Trap: Thinking supply-side and demand-side causes are mutually exclusive
Demand-Pull Inflation
Indian Economy money supply effective demand
Demand-Pull Inflation: Too Much Money Chasing Too Few Goods
Demand-pull = inflation caused by excess demand relative to supply
Key triggers: money supply increase, income rise, government spending increase
Classic phrase: 'too much money chasing too few goods'
Core Concept
Demand-pull inflation happens when aggregate demand exceeds aggregate supply at current prices. Two main triggers from the question: increased money supply puts more purchasing power in people's hands, while increased effective demand means people want to buy more goods.
Money Supply → Inflation
%%{init: {"flowchart": {"wrappingWidth": 460}}}%%
flowchart TD
s1["`**RBI increases money supply**
More currency enters the economy`"]
s2["`**People have more money**
Purchasing power rises across the economy`"]
s3["`**Demand for goods increases**
Same goods, but more money to buy them`"]
s4["`**Prices rise**
Sellers can charge higher prices due to excess demand`"]
s1 --> s2
s2 --> s3
s3 --> s4Real-World Examples
Salary increases without productivity gains → people have more money to spend
Government deficit spending → more money pumped into economy
Lower interest rates → cheaper loans increase spending capacity
Festival seasons → temporary surge in effective demand for goods
Trap: Effective demand requires both desire AND purchasing power — not just wanting something
Trap: Money supply increase doesn't always cause inflation — depends on economy's absorption capacity
Cost-Push Inflation
Indian Economy decrease in the aggregate level of output
Cost-Push Inflation: Supply-Side Price Pressures
Cost-push = inflation caused by reduced supply or increased production costs
Decreased aggregate output → same demand, fewer goods → higher prices
Supply shocks are classic triggers: oil crisis, natural disasters, strikes
Supply-Side Mechanism
Cost-push inflation occurs when the supply side of the economy faces constraints. From the question, decreased aggregate output means fewer goods are produced while demand remains constant, forcing prices upward.
Output Decrease → Inflation
%%{init: {"flowchart": {"wrappingWidth": 460}}}%%
flowchart TD
s1["`**Aggregate output falls**
Factories produce less, farms yield less`"]
s2["`**Supply of goods decreases**
Fewer goods available in the market`"]
s3["`**Demand remains same**
People still want to buy at previous levels`"]
s4["`**Prices increase**
Scarcity drives prices up`"]
s1 --> s2
s2 --> s3
s3 --> s4Cost-Push Triggers
Trigger | Impact on Output | Example | Price Effect |
|---|---|---|---|
Natural disasters | Reduces production capacity | Drought affects crops | Food prices rise |
Input cost rise | Makes production expensive | Oil price increase | Transport, manufacturing costs up |
Labor strikes | Disrupts production | Coal miners' strike | Energy prices rise |
Supply chain breaks | Goods don't reach markets | Port blockade | Import-dependent goods costlier |
Trap: Aggregate output includes ALL goods and services, not just manufacturing
Trap: Cost-push inflation can happen even when demand is stable — it's purely supply-driven
Inflation Measurement in India
Indian Economy
How India Measures & Controls Inflation
CPI (Consumer Price Index) is RBI's primary inflation measure since 2013
Inflation target: RBI aims for 4% CPI with +/- 2% tolerance band
WPI still used for wholesale price trends, but not for monetary policy
India's Approach
India switched from WPI to CPI as the key inflation measure in 2013. RBI uses CPI inflation for monetary policy decisions and maintains an inflation target of 4% with a tolerance band.
CPI vs WPI
Aspect | Consumer Price Index (CPI) | Wholesale Price Index (WPI) |
|---|---|---|
Primary use | RBI monetary policy decisions | Economic analysis, government tracking |
Price level | Retail prices paid by consumers | Wholesale/producer prices |
Basket includes | Food, housing, transport, healthcare | Primary articles, fuel, manufactured goods |
Inflation target | 4% ± 2% (RBI mandate) | No specific target |
Policy relevance | High — drives interest rate decisions | Medium — used for trends |
RBI's Inflation Control Tools
Repo rate changes — primary tool to control demand-pull inflation
Cash Reserve Ratio (CRR) — controls money supply in banking system
Open Market Operations — RBI buys/sells government securities
Moral suasion — RBI guidance to banks on lending practices
Trap: India uses CPI for monetary policy, not WPI — many students confuse this
Trap: 4% target is for CPI inflation, with ±2% tolerance (i.e., 2-6% range is acceptable)