You Have a Choice Between Two Lenses of Focal Lengths

question 95

Multiple Choice

You have a choice between two lenses of focal lengths f_a and f_b,where f_b = 2f_a,to use as the objective lens in building a refracting telescope.If the magnification you obtain using lens a is M_a,what will be the magnification when using lens b?

• A)M_b = 2 M_a
• B)M_b = 4 M_a
• C)M_b = 8 M_a
• D)M_b = M_a/4
• E)M_b = M_a/2

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Definitions:

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Having or displaying an excessively critical point of view or being quick to make judgments about others.

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A set of guidelines or criteria used to evaluate or score performance, products, or responses in a consistent and standardized manner.

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The intellectual discipline of actively and skillfully conceptualizing, applying, analyzing, synthesizing, and/or evaluating information gathered from, or generated by, observation, experience, reflection, reasoning, or communication.

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Pertaining to the systematic examination and evaluation of data or information, often by breaking it into its component parts to uncover their interrelationships.