Quiz on Refraction and Total Internal Reflection

What is the primary purpose of tracing the edge of the glass block in the experiment?

• To measure the thickness of the glass
• To visualize the path of light rays
• To determine the refractive index
• To create a permanent mark on the paper

When light passes from air into glass, what happens to its speed?

• It increases
• It decreases
• It remains the same
• It fluctuates

What is the critical angle in the context of refraction?

• The angle at which light is completely absorbed
• The angle of incidence for which the angle of refraction is 90°
• The angle at which light travels in a straight line
• The angle that causes total internal reflection

In the experiment with the glass block, what is the relationship between the angle of incidence and the angle of refraction?

• They are always equal
• They are inversely proportional
• They follow Snell's Law
• They have no relationship

What happens to light rays that strike the water surface at an angle greater than the critical angle?

• They are refracted into the air
• They are absorbed by the water
• They are totally internally reflected
• They scatter in all directions

Which of the following is an application of total internal reflection?

• Lenses in glasses
• Mirrors in telescopes
• Optical fibers
• Prisms for dispersion

How does the displacement of the ray due to refraction relate to the width of the block?

• It is inversely proportional
• It is directly proportional
• It has no relation
• It varies randomly

What is the angle of deviation in a prism?

• The angle between the incident ray and the emergent ray
• The angle of incidence at the first surface
• The angle of refraction at the second surface
• The angle of total internal reflection

In the context of optical fibers, what happens when light strikes the side of the tube at an angle greater than the critical angle?

• It escapes the fiber
• It is absorbed by the fiber
• It is totally internally reflected
• It is refracted out of the fiber

What is the significance of using a bundle of fibers in a medical endoscope?

• To increase the brightness of the image
• To allow flexibility without breaking
• To reduce the size of the device
• To enhance the color of the image