**CHAPTER 1: POPULATION - DISTRIBUTION, DENSITY, GROWTH AND COMPOSITION**
**SECTION 1: SOURCES OF POPULATION DATA**
• Census Operation: Population data collected every 10 years in India
• First Census: Conducted in 1872 (incomplete)
• First Complete Census: 1881
• Current Data Reference: 2011 Census (most recent)
• India's Total Population (2011): 1,210 million (1.21 billion) — Second largest after China
• Comparison: India's population exceeds North America + South America + Australia combined
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**SECTION 2: DISTRIBUTION OF POPULATION**
**Definition**: Distribution refers to spatial arrangement of population across geographical areas
**Key Pattern**: Highly uneven/irregular distribution across India
**States with Highest Population** (in order):
• Uttar Pradesh (highest)
• Maharashtra
• Bihar
• West Bengal
• Andhra Pradesh
**States/UTs with Lowest Population Share**:
• Arunachal Pradesh (0.11%) — despite large geographical area
• Jammu & Kashmir (1.04%)
• Uttarakhand (0.84%)
**Physical Factors Influencing Distribution**:
**Socio-Economic & Historical Factors**:
• Evolution of settled agriculture
• Agricultural development patterns
• Human settlement history
• Transport network development
• Industrialisation and urbanisation
**Influence of Development**:
**River Plains & Coastal Areas**: Traditional regions of high population concentration due to early human settlement history
**Urban Centers with High Population**: Delhi, Mumbai, Kolkata, Bengaluru, Pune, Ahmedabad, Chennai, Jaipur
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**SECTION 3: DENSITY OF POPULATION**
**Definition**: Number of persons per unit area (per sq km)
**All-India Density (2011)**: 382 persons/sq km
**Historical Increase**: From 117 persons/sq km (1951) → 382 persons/sq km (2011) = increase of 265 persons/sq km in 60 years
**Spatial Variation in India** (Range: 17 to 11,297):
Highest Density:
• Delhi/NCT (11,297 persons/sq km) — highest in India
• Bihar (1,102)
• West Bengal (1,029)
• Uttar Pradesh (828)
• Kerala (859)
• Tamil Nadu (555)
Lowest Density:
• Arunachal Pradesh (17 persons/sq km)
Regional Patterns:
• Northern Plains: High density (Bihar, UP, WB)
• Peninsular States: Moderate-High density (Kerala, Tamil Nadu)
• Assam, Gujarat, AP, Haryana, Jharkhand, Odisha: Moderate density
• Himalayan hill states: Low density
• North-Eastern states (excluding Assam): Relatively low density
• Union Territories (excluding Andaman & Nicobar): Very high density
**Types of Population Density**:
1. **Arithmetic/Crude Density** = Total population ÷ Total area
2. **Physiological Density** = Total population ÷ Net cultivated area
3. **Agricultural Density** = Agricultural population ÷ Net cultivable area
**Importance**: Physiological and agricultural densities are more significant for India due to large agricultural population
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**SECTION 4: GROWTH OF POPULATION**
**Definition**: Change in number of people in an area between two points of time; expressed as percentage rate
**Components of Population Growth**:
• Natural Growth: Birth rates - Death rates
• Induced Growth: In-migration - Out-migration
**Key Statistic**: Annual growth rate of India (2011) = 1.64%
**Population Doubling Time**: Time taken by population to double at current annual growth rate
**FOUR DISTINCT PHASES OF POPULATION GROWTH (1901-2011)**:
**Phase I: Stagnant/Stationary Phase (1901-1921)**
• Growth rate: Very low
• 1911-1921: Negative growth rate (-0.31%)
• Cause: High birth rates + High death rates = Low net growth
• Data: 1901: 238.4 million → 1921: 251.3 million (13.7 million increase)
**Phase II: Early Expansion Phase (1921-1951)**
• Growth rate: Gradually increasing
• 1921-1951: Decadal growth increased from negative to +13.31%
• Cause: Death rates decline due to improved health/medicine; birth rates remain high
• Data: 1921: 251.3 million → 1951: 361.1 million (109.8 million increase)
**Phase III: Rapid Expansion Phase (1951-1981)**
• Growth rate: Highest ever recorded (24.66-24.80%)
• Peak decadal growth: 1971 = 24.80% (108.9 million)
• 1981: 24.66% (135.2 million)
• Cause: Large-scale death rate decline + High fertility maintained
• Data: 1951: 361.1 million → 1981: 683.3 million (322.2 million increase in 30 years)
**Phase IV: Declining Growth Phase (1981-2011)**
• Growth rate: Started declining from 1981 onwards
• 1991: 23.85%
• 2001: 21.54%
• 2011: 17.64% (current)
• Cause: Declining birth rates due to increased education, family planning, contraceptive use
• Data: 1981: 683.3 million → 2011: 1,210.2 million (526.9 million increase)
**Decadal Growth Rate Formula**:
g = (p₂ - p₁)/p₁ × 100
where p₁ = base year population, p₂ = present year population
**Key Census Data Table Summary**:
• Absolute highest addition: 2001 (182.3 million)
• Highest growth rate: 1971 (24.80%)
• Currently declining but still significant: 2011 (17.64%)
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**SECTION 5: KEY CONCEPTS & DEFINITIONS**
• **Census**: Decennial (10-yearly) complete enumeration of population
• **Population Distribution**: Spatial arrangement/pattern of people across regions
• **Population Density**: People per unit area; crucial for understanding resource pressure
• **Natural Growth**: Birth rate minus death rate
• **Physiological Density**: Most meaningful for assessing agricultural land pressure in India
• **Agricultural Density**: Specifically shows pressure on farming communities
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**CBSE BOARD EXAM TIPS**
**Map-Based Questions**:
**Diagram Labeling**:
**Data Interpretation**:
**Short Answer Questions** (2-3 marks):
**Long Answer Questions** (5-6 marks):
**Typical Question Patterns**:
• "Name five states with highest population"
• "Why is density uneven in India?"
• "Calculate population growth rate using formula"
• "Compare 1981 and 2011 population data"
• "What does physiological density indicate?"
Q1. According to Census 2011, which state/UT has the highest population density in India?
Answer: A — Delhi as the National Capital Territory has the highest population density at 11,297 persons/sq km due to concentration of government, commerce, and services.
Q2. Which of the following ten states together account for approximately 76 per cent of India's total population?
Answer: A — The ten states of UP, Maharashtra, Bihar, WB, AP, TN, MP, Rajasthan, Karnataka, and Gujarat together contain 76% of India's population.
Q3. What is the decadal growth rate of India's population according to Census 2011?
Answer: C — The decadal growth rate shown in Census 2011 data is 1.97 per cent per decade, reflecting the slowing growth rate over the last century.
Q4. Study the formula: Physiological Density = Total Population / Net Cultivated Area. Why is this measure more significant for India than simple arithmetic density?
Answer: A — Physiological density is more relevant for India because it measures human pressure on actual farmable land, critical for a country where 69% are rural and dependent on agriculture.
Q5. Which of the following statements about population density in India is NOT correct?
Answer: B — Hill states of the Himalayan region have relatively LOW population densities due to difficult terrain, lower temperatures, and challenging agriculture, not high densities.
Q6. Assertion (A): The concentration of population remains high in North Indian Plains despite resource degradation. Reason (R): An early history of human settlement and developed transport networks keep these regions attractive for habitation. Which of the following is correct?
Answer: A — The statement correctly explains that historical settlement patterns and transport infrastructure lock populations into regions even when resources degrade, making R the valid reason for A.
Q7. If the natural growth component of population is (Birth Rate − Death Rate), then the induced growth component refers to:
Answer: A — Induced growth is specifically the volume of inward and outward migration; net migration (inward − outward) is the induced component complementing natural growth.
Q8. Examine the data: Arunachal Pradesh (17 persons/sq km), Rajasthan (201 persons/sq km), and Punjab (550 persons/sq km). Which factor best explains why Rajasthan and Punjab have much higher densities than Arunachal Pradesh despite similar climatic challenges?
Answer: B — Irrigation development in Rajasthan and agricultural mechanisation (Green Revolution) in Punjab transformed population potential in these regions from what would be thinly populated areas.
Q9. Which of the following cities shows high concentration of population primarily due to industrial development and urbanisation rather than early agricultural settlement?
Answer: A — Delhi, Mumbai, Kolkata, Bengaluru, and similar urban regions have high population density primarily due to modern industrial development and urbanisation drawing rural-urban migrants, not historic agriculture.
Q10. HOTS: If India's population is 1,210 million with a density of 382 persons/sq km, and the total geographical area is approximately 3.28 million sq km, calculate which of the following correctly interprets the relationship between India's land and population resources.
Answer: B — The 382 average masks extreme variation (Delhi 11,297 vs Arunachal 17); uneven distribution concentrates 76% in 10 states, creating resource pressure in some areas while others remain underutilised, requiring regional planning.
What is the current population density of India (Census 2011)?
382 persons per square kilometre, representing an increase from 117 persons/sq km in 1951.
Which five states account for the largest share of India's population?
Uttar Pradesh, Maharashtra, Bihar, West Bengal, and Andhra Pradesh are the five most populous states.
Define physiological density and give its formula.
Physiological density = total population divided by net cultivated area, measuring pressure on farmland.
Name three physical factors that influence population distribution in India.
Climate (temperature and rainfall), terrain (plains vs mountains), and water availability are the three main physical factors.
Which two components make up the total population growth rate?
Natural growth (births minus deaths) and induced growth (migration in and out) together form total population growth.
What is population doubling time?
Population doubling time is the number of years required for a population to double itself at the current annual growth rate.
Which state has the highest population density among Indian states?
Bihar has the highest population density among Indian states with 1,102 persons per square kilometre.
Name the sources of population data in India.
Population data are collected through Census operations held every 10 years; India's first complete Census was in 1881.
How has development of irrigation affected population distribution in India?
Irrigation development in Rajasthan has resulted in moderate to high population concentration in previously thinly populated areas.
Which physical feature do the North Indian Plains and Coastal Plains share regarding population?
Both the North Indian Plains and Coastal Plains have higher proportions of population due to fertile soils, water availability, and early settlement.
Define population density and name the three types of population density used in geography. [2 marks] [2 marks]
State that density is persons per unit area; name (1) Arithmetic, (2) Physiological, (3) Agricultural density; mention their individual formulas in one line each.
Explain with examples how physical and socio-economic factors together determine the uneven distribution of population in India. [5 marks] [5 marks]
Physical factors: cite climate/water/terrain in plains vs mountains with examples (North Indian Plains vs Himalayas). Socio-economic: explain early agriculture settlement, transport networks, industrialisation (Delhi/Mumbai urban centres) with 2-3 specific examples showing how development changed thinly populated areas.
Analyse the spatial variation in population density across India (2011 Census data) and discuss why physiological density is more important than arithmetic density for agricultural planning in India. Support your answer with three specific state examples. [6 marks] [6 marks]
Compare highest (Delhi 11,297) and lowest (Arunachal Pradesh 17) arithmetic densities; explain physiological density = pop/cultivated area measures farm pressure; show why this matters: India has 69% rural population dependent on agriculture (use Appendix-i data for 3 states like Bihar/UP showing high physiological pressure vs states like Punjab/Haryana with better irrigation/mechanisation reducing pressure despite high arithmetic density); conclude how physiological density guides agricultural policy and land-use planning better than simple arithmetic average.
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