Why Do Reflecting Telescopes Usually Have a Secondary Mirror in Addition

question 38

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 focal length
• D) To combat chromatic aberration

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Definitions:

Repeated Strategy

A course of action consistently employed in sequential or repeated decision-making contexts, often in game theory.

Prisoners' Dilemma

A scenario in game theory where two individuals acting in their own self-interest do not produce the optimal outcome, illustrating the potential conflict between personal and social interests.

Dominant Strategy

A strategy that is the best for a player in a game regardless of the strategies chosen by the other players.

Cooperating

The act of working together towards a common goal or benefit, often seen in strategic partnerships between businesses or countries.