A Diffraction-Limited Laser of Length and Aperture Diameter D $\lambda$

question 29

Multiple Choice

A diffraction-limited laser of length and aperture diameter d generates light of wavelength $\lambda$ .If the beam is directed at the surface of the Moon a distance D away, the radius of the illuminated area on the moon is approximately:

• A)dD/
• B)dD/\(\lambda\)
• C)D\(\lambda\) /
• D)D\(\lambda\)/d
• E)\(\lambda\)/ d

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Definitions:

Fine Tune Messages

Fine-tuning messages involves carefully adjusting communication to ensure clarity, effectiveness, and appropriateness for the intended audience.

Summative Evaluation

An assessment conducted after the completion of a program or intervention to determine its overall efficacy or impact.

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An assessment that focuses on the implementation process of a program or intervention, examining its fidelity and quality.

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Assessing the changes that can be attributed to a particular intervention, project, or program, focusing on outcomes that are the direct result of the intervention.