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Question

During a star's life, which of the following always try to balance each other?

A
Gravitational force and gaseous pressure force
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B
Air resistance force and gravitational force
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C
Gaseous pressure force and air resistance force
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D
Frictional force and gaseous pressure force
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Solution

The correct option is A Gravitational force and gaseous pressure force
A star remains stable, as long as the gravitational force of the star pulling in, is balanced by the gaseous pressure force pushing out. A star’s life is a constant tug-of-war between the inward gravity and the outward pressure.


If there were no such delicate balance in stars, they would actually collapse and disintegrate into space in a matter of a few hours.

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