A Telescope Is Set Up in an Introductory Physics Lab

question 53

Multiple Choice

A telescope is set up in an introductory physics lab using lenses of focal lengths 10 cm and 50 cm. Since both lenses are the same diameter, it is not immediately clear which one to use as the eyepiece and which to use as the objective. If one uses the lens with a 50 cm focal length as the eyepiece, what power results?

• A) 500
• B) 5
• C) 0.2
• D) 0.002
• E) one cannot look through the system in this direction

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Definitions:

Long-Run Phillips

An economic concept suggesting that there is no long-term trade-off between inflation and unemployment, contrary to the short-run Phillips curve.

Monetary Neutrality

The concept that changes in the money supply only affect nominal variables, like prices, not real variables like output or employment in the long term.

Classical Dichotomy

The theoretical separation of nominal and real variables

Short-Run Phillips

A theoretical framework that implies a short-term inverse correlation between inflation rates and unemployment levels.