A) Nuclear
B) Gravitational
C) Electromagnetic
D) Weak force
Correct Answer: A
Solution :
Nuclear forces have the shortest range. They operate within the nucleus only, ie, upto distances of the order of \[{{10}^{-14}}m\]. Gravitational forces operate over very long distances especially, when the bodies are massive. For example, rotation of earth around the sun is due to gravitational pull of sun on earth. Electromagnetic forces operate over distances which are not very large. Weak forces are the forces of interaction between elementary particles of short life times. They exist between leptons and leptons, leptons and mesons, etc. Note The relative strengths of four types of basic forces in nature can be represented as \[{{F}_{G}}:{{F}_{W}}:{{E}_{E}}:{{F}_{N}}=1:{{10}^{25}}:{{10}^{38}}\]
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