Why Do Reflecting Telescopes Usually Have a Secondary Mirror in Addition

question 72

Multiple Choice

Why do reflecting telescopes usually have a secondary mirror in addition to a primary mirror?

• A) to increase the light-gathering power
• B) to make the telescope shorter
• C) to increase the magnification
• D) to increase the focal length
• E) to combat chromatic aberration

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Definitions:

Leverage

The use of borrowed capital or financial instruments to increase the potential return of an investment.

Borrows Money

The act of receiving funds from another party under the agreement to return the principal amount along with interest or other charges.

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A form of financial ownership in a company, giving the holder a portion of the profits and voting rights.

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Chief Executive Officer, the highest-ranking person in a company or organization, responsible for making major corporate decisions.