JEE PHYSICS MCQ: PHYSICAL WORLD [Dont Select]

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Electric force manifest itself in atmosphere, where

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Correct option: B

atoms are ionised and that leads to lightning

Option B (atoms are ionised and that leads to lightning) is correct because lightning is a result of electrical discharge due to ionization of atoms in the atmosphere.

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Which of the following statement is correct? Gravitational force dominates in terrestrial phenomena because Natural science does not include Prior to the advent of the Einstein’s theory of relativity, it was concluded that Assertion: In universe, gravitational force dominates in long distance and electric force dominates in short distance.

Reason: For gravitational force

\propto \frac{\text { (mass) }^2}{\text { distance }^2}

and electric force

\propto \frac{\text { charge }^2}{\text { distance }^2}

The theory of solar system, in which the sun occupies the central position, is known as