A 60 ^$\circ$ Prism Has a Refractive Index of 1 $\circ$

question 39

Multiple Choice

A 60 ^$\circ$ prism has a refractive index of 1.52.Calculate the angle of incidence for the initial light ray that is then refracted inside the prism and just undergoes total internal reflection at the opposite face of the prism.

• A)41.1 \(\circ\)
• B)18.9 \(\circ\)
• C)29.4 \(\circ\)
• D)30.6 \(\circ\)
• E)60.6 \(\circ\)

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Definitions:

Brightness Contrast

The difference in light intensity which makes an object distinguishable from others or from its background.

Mach Bands

An optical illusion in which the contrast between edges where two different shades meet appears exaggerated.

Brightness Contrast

The difference in brightness between objects or parts of objects, which influences the perception of their visual appearance.

Lateral Inhibition

A process in the nervous system where an excited neuron reduces the activity of its neighbors, sharpening sensory perception.