Which of the following is/are correct about conventional sources of energy?
The sources of energy which are exhaustible.
The sources of energy which cannot be renewed.
A conventional source of energy is one which is present in a limited amount in nature.
Conventional sources of energy had been in use for most of the human history.
The conventional source of energy is one which is present in a limited amount in nature, exhaustible and cannot be renewed. Coal, oil, petrol etc. are few examples of the conventional source of energy.
These sources of energy are termed conventional sources of energy as they are in use for most of the human history.