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:
To solve the problem of matching List I with List II, we need to recognize the relationship between different contraceptive methods and their categories:
| List I | Description |
| Vasectomy | A permanent surgical method of male sterilization where the vas deferens are cut to prevent sperm from entering the seminal stream. |
| Coitus interruptus | A natural method of contraception in which the male withdraws before ejaculation to prevent sperm from entering the female reproductive tract. |
| Cervical cap | A barrier method where a cap is placed over the cervix to block sperm from entering the uterus. |
| Saheli | An oral contraceptive method where pills are used for birth control by altering hormone levels to prevent ovulation. |
Based on the definitions, we can match List I with List II:
Thus, the correct answer is: A-III, B-IV, C-II, D-I.
| 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 |
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is : 
A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :
The current passing through the battery in the given circuit, is: 