Multiple Choice
What is a diffraction grating?
A) a flat, rectangular array of closely spaced photosensitive cells
B) a piece of glass with thousands of closely spaced, parallel grooves
C) an array of many radio telescopes used to observe a single source simultaneously
D) a triangular prism of solid glass used to disperse light into its colors
Correct Answer:
Verified
Correct Answer:
Verified
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