An Astronomical Telescope Has a Magnifying Power of 200 When

question 19

Multiple Choice

An astronomical telescope has a magnifying power of 200 when operated with a 3.50 cm focal length eyepiece. What is the focal length of the objective of this telescope?

• A) 204 cm
• B) 196 cm
• C) 700 cm
• D) 57.0 cm
• E) 30.0 cm

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Definitions:

Real-world Conditions

Circumstances or factors that occur naturally in everyday life, outside of controlled experimental settings.

Spurious Relationships

Apparent associations between two variables that are not causally related but may be due to a third, unaccounted-for variable.

Internal Validity

Relates to experimental design. A study has internal validity when a cause-and-effect relationship between variables is clearly demonstrable and observed changes can be attributed to a defined causal variable and not to any other possible variables.