A 10-Inch Telescope Is Used to Determine If What Appears

question 9

Multiple Choice

A 10-inch telescope is used to determine if what appears to be one star is actually two stars. Stars are so far away that they are essentially point sources. How close, in angle, can two stars be and still be resolved by this telescope? Use a wavelength of 550 nm.

• A)4.2 × 10^-8 degree
• B)2.64 × 10^-6 degree
• C)3.0 × 10^-4 degree
• D)1.5 × 10^-4 degree
• E)6.6 × 10^-8 degree

---

Definitions:

Effectiveness

Effectiveness refers to the degree to which a process, action, or intervention achieves its intended outcome or goals under normal or real-world conditions.

Representative Sampling

A method in statistics where a small subset of a population is chosen to accurately reflect the characteristics of the whole population.

Self-Report Bias

Refers to the bias that occurs when participants in research projects over or under-report behaviors or attitudes due to misremembering, misunderstanding, or wanting to present themselves in a favorable light.

Experimenter Bias

A process where the scientists performing the research influence the results, consciously or unconsciously, in order to portray a certain outcome.