In a Binary Star System,an Unseen Component Is Found to Have

question 44

Multiple Choice

In a binary star system,an unseen component is found to have a mass of about 8 solar masses.If this were a normal star,then it would be visible,so it must be a collapsed object.Theoretical considerations tell us that it must be a

• A) white dwarf.
• B) black hole.
• C) neutron star.
• D) brown dwarf.

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Definitions:

P(A Or B)

The probability that at least one of two events, A or B, will occur.

Probability

A measure of the likelihood that an event will occur, expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.

Independent Events

Two or more events where the occurrence or outcome of one event does not affect the occurrence or outcome of the other.

P(A And B)

The probability of both event A and event B occurring together.