When Light Illuminates a Diffraction Grating with 7000 Lines Per $62.4 ^ { \circ }$

question 84

Multiple Choice

When light illuminates a diffraction grating with 7000 lines per centimeter, its second order maximum is at $62.4 ^ { \circ }$ . What is the wavelength of the light?

• A) \(363 \mathrm {~nm}\)
• B) \(336 \mathrm {~nm}\)
• C) \(633 \mathrm {~nm}\)
• D) \(752 \mathrm {~nm}\)

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Definitions:

Cost Variance

The difference between the budgeted or estimated cost of a project and the actual cost incurred.

Cost Performance Index

A measure in project management that calculates the efficiency of budget utilization by dividing the earned value by the actual costs.

Schedule Variance

The difference between the planned and the actual project progress, indicating whether a project is ahead or behind schedule.

Resource Flow Variance

Variations in the rate, timing, and quality of resources being supplied to or produced by a process.