List - I (Period) | List - II (Population Growth Characteristics) | ||
(A) | 1901 - 1921 | (I) | Period of Population Explosion |
(B) | 1921 - 1951 | (II) | Gradually slowing down of growth rate |
(C) | 1951 - 1981 | (III) | Period of steady Population Growth |
(D) | 1981 - till present | (IV) | Stagnant or stationery phase of growth |
Match List I with List II.
List I | List II | ||
A | Vasectomy | I | Oral method |
B | Coitus interruptus | II | Barrier method |
C | Cervical cap | III | Surgical method |
D | Saheli | IV | Natural method |
Choose the correct answer from the options given below:
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : The potential (V) at any axial point, at 2 m distance(r) from the centre of the dipole of dipole moment vector
\(\vec{P}\) of magnitude, 4 × 10-6 C m, is ± 9 × 103 V.
(Take \(\frac{1}{4\pi\epsilon_0}=9\times10^9\) SI units)
Reason R : \(V=±\frac{2P}{4\pi \epsilon_0r^2}\), where r is the distance of any axial point, situated at 2 m from the centre of the dipole.
In the light of the above statements, choose the correct answer from the options given below :
The output (Y) of the given logic gate is similar to the output of an/a :
It refers to the rapid increase in the population of an area among human beings. Furthermore, it is a situation where the economy is not capable of coping with the increasing demand of its population. Population explosion refers to the number of people that live in an area. It is a major issue for developing countries. Also, the government is not taking proper measures to control this problem
The cause of the population explosion includes many factors and reasons. These includes: