A fiber optic cable uses total internal reflection to transmit light. What is th
Practice Questions
Q1
A fiber optic cable uses total internal reflection to transmit light. What is the primary requirement for this to work effectively?
The core must have a higher refractive index than the cladding
The cladding must have a higher refractive index than the core
The light must be monochromatic
The cable must be straight
Questions & Step-by-Step Solutions
A fiber optic cable uses total internal reflection to transmit light. What is the primary requirement for this to work effectively?
Correct Answer: Core ka refractive index cladding se zyada hona chahiye.
Step 1: Understand what a fiber optic cable is. It is a thin strand of glass or plastic that transmits light.
Step 2: Learn about light and how it behaves when it travels through different materials.
Step 3: Know that light can bend when it enters a new material, which is called refraction.
Step 4: Realize that total internal reflection happens when light hits the boundary of two materials at a certain angle.
Step 5: Identify the two parts of a fiber optic cable: the core (where the light travels) and the cladding (the outer layer).
Step 6: Understand that for total internal reflection to happen, the core must have a higher refractive index than the cladding.
Step 7: Conclude that this difference in refractive index keeps the light bouncing inside the core, allowing it to travel long distances.
Total Internal Reflection – The phenomenon where light is completely reflected within a medium when it hits the boundary at an angle greater than the critical angle, provided the medium has a higher refractive index than the surrounding medium.
Refractive Index – A measure of how much the speed of light is reduced inside a medium compared to the speed of light in a vacuum; essential for determining the conditions for total internal reflection.
Fiber Optic Structure – The design of fiber optic cables, which includes a core and cladding, where the core must have a higher refractive index to facilitate light transmission through total internal reflection.
