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A composite body is consisted of __________ number of particles.

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A composite body is consisted of __________ number of particles.

(a) Infinite

(b) Finite

(c) Hundreds

(d) Thousands

I have been asked this question in examination.

Question is from Composite Bodies topic in division Centre of Gravity and Centroid of Engineering Mechanics

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Right choice is (a) Infinite

To elaborate: The various bodies are composed of infinite number of particles. They are very small in size. They can’t be seen by our naked eyes. Thus the number of particles is not thousands nor hundreds. But it is uncountable.

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