What is good source of energy?
It should not leave any residue.
Characteristics of a good source of energy:\tIt should be able to do large amount of work for each unit of mass or volume.\tIt should be easily accessible.\tIt should be easily transported.\tIt should be economical.
Sun is the ultimate source of energy
Those who don\’t give pollution
Coal, petroleum,etc are good source of energy.
Solar energy
That does not cause pollution..
A source which is : 1. Easily accessible2. Cheap3. Easily transportation4. No harm to environment5. Causes no pollution or very less pollution