Q. When the two elements of a pair are kept in contact with the help of a spring, the pair is known as (Solved)
1. A lower pair
2. a higher pair
3. a closed pair
4. an unclosed pair
5. None of the above
- d. an unclosed pair
1. A lower pair
2. a higher pair
3. a closed pair
4. an unclosed pair
5. None of the above