Refraction and Light Behavior Concepts

The video tutorial explores the concepts of refraction and reflection using a Phet simulation. It begins with an introduction to the activity, followed by an explanation of how the speed of light changes as it crosses different media, affecting the refractive index. Snell's Law is used to calculate the angle of refraction, and the simulation demonstrates partial reflection and light intensity. The tutorial discusses total internal reflection and conditions required for it. It then shifts to wave mode, explaining wavelength changes and frequency. Finally, the video examines dispersion using prisms, highlighting how different colors of light refract differently.

What is the initial setup for the Phet simulation in this activity?

• Glass to air with advanced mode

• Air to glass with intro mode

• Water to air with advanced mode

• Air to water with intro mode

How does the speed of light change when it moves from air to water?

• It fluctuates

• It remains the same

• It decreases

• It increases

What happens to the refractive index when light enters a denser medium?

• It decreases

• It increases

• It remains constant

• It becomes zero

What is the relationship between the angle of incidence and the angle of refraction when light bends towards the normal?

• Angle of incidence is smaller

• Angle of incidence is greater

• Both angles are equal

• Angle of refraction is greater

What additional process occurs alongside refraction at the boundary?

• Polarization

• Total internal reflection

• Partial reflection

• Diffraction

Why does total internal reflection not occur when light goes from water to air?

• Light bends away from the normal

• The angle of incidence is too small

• The refractive index is too high

• Light bends towards the normal

What is the critical angle for the water-air boundary?

• 60 degrees

• 49 degrees

• 30 degrees

• 90 degrees

How does the wavelength of light change as it moves from water to air?

• It becomes zero

• It remains the same

• It increases

• It decreases

What happens to the wavelength of the reflected ray compared to the incident ray?

• It doubles

• It remains the same

• It decreases

• It increases

Why does red light have a larger angle of refraction than violet light at the first boundary?

• Violet light has a smaller refractive index

• Red light has a smaller refractive index

• Violet light travels faster

• Red light travels slower