Question

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

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

Answer 1

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.