Question

Correct the mistakes, if any, in the following statements:
(a) A good source of energy would be the one which does a small amount of work per unit volume of mass.
(b) Any source of energy we use to do work is consumed and can be used again.

Answer 1

Both statements are wrong.

(a) A good source of energy would be the one which would do a large amount of work per unit volume of mass.

A good source of energy is one that is:

1. easily available

2. easy to store and transport

3. will do a large amount of work per unit volume of mass

4. cheap and economic.

(b) Any source of energy we use to do work is consumed and cannot be used again.