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JEE PHYSICS MCQ: GRAVITATION
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Consider a binary star system of star and star with masses and revolving in a circular orbit of radii and respectively. If and are the time period of star and star respectively, then
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Correct option: B
Option B () is correct because both stars in a binary system orbit their common center of mass with the same angular velocity, hence the same period.
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Which of the following statement is absolutely correct about mass
Statement I: An astronaut in a satellite feels weightlessness:
Statement II: As observed by another astronaut's in the same satellite, force of gravity and centrifugal force balance each other. An iron ball and a wooden ball of the same radius are released from a height 'h' in vacuum. The time taken by both of them to reach the ground is
Statement II: As observed by another astronaut's in the same satellite, force of gravity and centrifugal force balance each other. An iron ball and a wooden ball of the same radius are released from a height 'h' in vacuum. The time taken by both of them to reach the ground is
