Which one of the following lenses should be used to correct the defect of astigmatism
1). Cylindrical lens
2). Concave lens
3). Convex lens
4). Bifocal lens
3. What is the SI unit of Force?
4. What is the other name of Galileo's law of falling bodies?
5. Which of the following is a primary consumer?
6. Alternating current is converted into direct current by a
7. Momentum is measured as the product of :
8. A decibel is
9. The instrument that measures and records the relative humidity of air is
10. Which word is related to processing the speed in computers ?