The Distance Between the Ruled Lines on a Diffraction Grating

question 74

Multiple Choice

The distance between the ruled lines on a diffraction grating is 1,770 nm.The grating is illuminated at normal incidence with a parallel beam of white light in the 400 nm to 700 nm wavelength band.What is the longest wavelength that appears in the third order spectrum?

• A)590 nm
• B)570 nm
• C)550 nm
• D)530 nm
• E)610 nm

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Definitions:

Lysozyme

An enzyme that breaks down the cell walls of bacteria, found in saliva, tears, and other secretions, contributing to the body's immune defense.

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The process by which a cell’s electrical charge becomes less negative, often initiating a nerve impulse or muscle contraction.

Neurotransmitter

Chemical messengers that transmit signals across a synapse from one neuron to another.