Any object which has an ability of producing light energy at its own is called as the source of light. e.g., Sun, Firefly, Battery, Cell Candle, Bulb etc. Natural light Our main source of natural light...
A set is a well defined collection of objectives. A = {coat, hat, scarf, gloves, boots}, where A is the name of the set, and the braces indicate that the objects written between them belong to the set. Every...
When you learn something and even if you are thorough, it is better to learn the same thing after a week or two. This will help you understand the topic well.