1. The system of units: A set of fundamental and derived units is called system of units. 2. Ampere: One ampere is the unit of current equal to a flow of one coulomb per second. 3. Mole: The gram atomic...
What is a fossil fuel? Ans: Coal and petroleum. Give two examples of conventional energy. Ans: Fossil fuels (coal and petroleum) Give two examples of non-conventional energy. Ans: Nuclear energy and...
What is Prism? Prism is uniform transparent refracting medium bounded by two plane surfaces inclined at an angle. What is an optical centre? A point on the principal axis, through which, light rays...