An Unpolarized Beam of Light Has Intensity I₀ $\theta$ Find $\theta$ If the Emerging Light Has Intensity I₀/4:
A)sin^-1(1/2)
B)sin^-1(1/)
C)cos^-1(1/2)

question 14

Multiple Choice

An unpolarized beam of light has intensity I₀.It is incident on two ideal polarizing sheets.The angle between the axes of polarization of these sheets is $\theta$ .Find $\theta$ if the emerging light has intensity I₀/4:

• A)sin^-1(1/2)
• B)sin^-1(1/)
• C)cos^-1(1/2)
• D)cos^-1(1/)
• E)tan^-1(1/4)

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Definitions:

Depolarization

A decrease in the difference of electrical charge across a membrane, which can initiate an action potential in neurons.

Neural Membrane

The lipid bi-layer that encloses the cytoplasm of neurons, playing a key role in the transmission of electrical signals within the nervous system.

Myelin Sheath

A protective covering made of fatty substances that surrounds the axons of many neurons, enhancing nerve conduction velocity.

Potassium Ions

Charged atoms of potassium that play critical roles in physiological processes such as nerve signal transmission and muscle contraction.