A Diffraction Grating Has 6

question 117

Multiple Choice

A diffraction grating has 6.00 × 10³ lines per centimeter ruled on it.What is the angular separation between the second and the third orders on the same side of the central order when the grating is illuminated with a beam of light of wavelength 550 nm?

• A)20.5°
• B)30.5°
• C)40.6°
• D)50.5°

---

Definitions:

Forebrain

Evolutionarily the most recent addition to the brain; coordinates advanced cognitive functions such as thinking, planning, and language; contains the allocortex, neocortex, and basal ganglia.

Midbrain

Central part of the brain; contains neural circuits for hearing and seeing as well as for orienting movements.

Hindbrain

Evolutionarily the oldest part of the brain; contains the pons, medulla, reticular formation, and cerebellum, the structures that coordinate and control most voluntary and involuntary movements.

Brain Development

The process by which the brain grows and matures, involving changes in structure, size, and function from prenatal life through adulthood.