Three Flat Layers of Transparent Material Are Stacked Upon One

question 75

Multiple Choice

Three flat layers of transparent material are stacked upon one another.The top layer has index of refraction n₁,the middle has n₂ and the bottom one has n₃.If n₁ > n₂ > n₃,and if a ray of light strikes the top layer at an angle of incidence θ_i = 30º,in which layer is the angle of refraction the greatest?

• A)the top layer
• B)the middle layer
• C)the bottom layer
• D)Once the ray enters the touching layers,the angle of refraction remains constant.

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Definitions:

Infrared

A type of electromagnetic radiation with wavelengths longer than visible light but shorter than microwaves, used in devices like remote controls and thermal imaging cameras.

Twisted-pair

A type of cabling that consists of pairs of insulated wires twisted together, commonly used for telecommunication and network connections.

Cable Medium

A type of physical transmission medium that uses cables, such as coaxial or fiber optic, to transmit data.

Coaxial Cable

A type of electrical cable consisting of a central conductor surrounded by an insulating layer and an outer conducting shield, used for transmitting television, telephone, and internet signals.