Natural Numbers: The set of counting numbers is called natural numbers. It is denoted by N, where N = {1,2,3, …..} Whole Numbers: when zero is included in the set of natural numbers, then it is...
1. Two hydrogen atoms and one oxygen atom makes a water molecule. Heavy water is also water, but it contains a higher proportion of the hydrogen isotope – deuterium. 2. Heavy water has a higher...
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...