Step 1:Observe number of towns in each census year.
1961: 2,365
1971: 2,590
1981: 3,378
1991: 4,689
2001: 5,161
2011: 6,171
Step 2:Calculate net increase by decade.
1961–71: +225
1971–81: +788
1981–91: +1,311
1991–2001: +472
2001–11: +1,010
Step 3:Identify the lowest increase.
The smallest increase is 225 during 1961–1971.
Answer: 1961–1971
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Question: 2
Mention the net increase in number of towns/ULBs during 1961–91.
Step 1:Take values from the table.
1961: 2,365 towns
1991: 4,689 towns
Step 2:Find the increase.
\[
4,689 - 2,365 = 2,324
\]
Answer:
The net increase in number of towns/ULBs during 1961–1991 is 2,324.
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Question: 3
Explain the decennial growth rate of urban population.
Concept:
Decennial growth rate refers to the percentage increase in population over a period of ten years.
It is commonly used in census studies to measure urbanisation trends.
Explanation:
It measures the growth of urban population between two consecutive census years.
It is calculated as:
\[
\text{Decennial Growth Rate} = \frac{\text{Population increase in 10 years}}{\text{Population at beginning of decade}} \times 100
\]
A higher decennial growth rate indicates rapid urbanisation.
It reflects migration, natural population growth, and expansion of urban areas.
Conclusion:
Thus, the decennial growth rate is an important indicator used to understand the pace and pattern of urban growth.
