question_answer

What is population doubling time? Explain the characteristics of the growth of population in India in phase I and phase II.

Answer:

Population doubling time is defined as the time taken by any population to double itself at its current annual growth rate.

Characteristics of the growth of population in India in phase-I:

(i) The period from 1901 to 1921 is referred to as phase I.

(ii) Population growth during this phase remained stagnant.

(iii) Both birth rate and death rate were high keeping the rate of increase low.

Phase II:

(i) The decades 1921 to 1951 are referred to as phase II.

(ii) During this phase population growth is Steady.

(iii) Lower death rate due to better medical facilities results in the decline in the mortality rate.