Question

a) Name fundamental forces of nature. Discuss properties of any two of them.
b) Write down Advantages of Sl system of unit over other systems
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Answer 1

There are four fundamental forces in nature which are Gravitational force, Strong force, Weak force and Electromagnetic force. These forces prevent the drifting of matter in the universe and helps keep it together. Gravitational Force: This force is the weakest but has an infinite range.

The greatest advantage of SI is that it has only one unit for each quantity (type of measurement). This means that it is never necessary to convert from one unit to another (within the system) and there are no conversion factors for students to memorize. For example, the one and only SI unit of length is the meter (m)