What Is the Difference Between an Optical Double Star and a Visual

question 34

Multiple Choice

What is the difference between an optical double star and a visual binary star?

• A) There is no difference: They are two names for the same thing.
• B) Optical double stars can be seen as separate stars only through a telescope,whereas visual binaries can be seen with the unaided eye (e.g. ,the star Mizar in the Big Dipper's handle).
• C) The stars in an optical double star are actually orbiting each other,whereas a visual binary is an illusion: The stars are at vast distances from each other and are not actually orbiting each other.
• D) An optical double is an illusion: The stars are at vast distances from each other and are not actually orbiting each other,whereas in a visual binary,the stars are actually orbiting each other.

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Definitions:

Total Float

The amount of time that a project task can be delayed without causing a delay to subsequent tasks or the project's completion date.

Net Collection Float

The difference between check deposits recorded in the book balance and the amount of checks that have actually been cleared or credited to the bank account.

Outstanding Cheques

Cheques issued by a company that have not been deposited or cashed by the recipient by the end of the accounting period.

Liquidity

The ease with which an asset can be converted into cash without significantly affecting its price, reflecting the ability of a company or individual to meet immediate and short-term obligations.