Light from Two Sources $\lambda$ ₁ = 623 Nm And $\lambda$ ₂ = 488 Nm, Is Incident on a Diffraction Grating

question 6

Multiple Choice

Light from two sources, $\lambda$ ₁ = 623 nm and $\lambda$ ₂ = 488 nm, is incident on a diffraction grating that has 5550 lines/cm. What is the angular separation, $\theta$ ₁ - $\theta$ ₂, of the second order maxima of the two waves?

• A)11.0°
• B)15.0°
• C)25.0°
• D)32.8°
• E)43.8°

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Definitions:

Ultimate Causes

Explanatory factors in biology that address why organisms have the traits they do, often looking at historical reasons and evolutionary processes.

Evolutionary Pressures

Various factors in the environment that influence the survival and reproduction of species, driving the process of natural selection.

Genetic Causes

Factors related to variations or mutations in genes that can lead to various traits, diseases, or conditions in organisms.

Stickleback

A small fish often used in evolutionary biology studies, notable for its variable spines and the ability to adapt to fresh and salt water.