Light Behavior and Properties

The video explores various phenomena of light, including scattering, reflection, dispersion, and refraction. It explains how scattering causes the sky to appear blue and reddish at sunrise or sunset. Dispersion is discussed in the context of creating a spectrum and rainbows. Refraction is introduced with a focus on the refractive index, its formulas, and how light behaves when transitioning between different mediums. The video also covers the effects of light traveling from rarer to denser mediums and vice versa, highlighting the bending of light rays and the conditions under which light propagates undeviated.

Which of the following is NOT a process that light can undergo?

• Scattering

• Refraction

• Absorption

• Reflection

What causes the sky to appear blue?

• Dispersion of light

• Refraction of light

• Scattering of light

• Reflection of light

Why does the sky appear reddish or orange during sunrise or sunset?

• Due to the reflection of light

• Due to the scattering of light

• Due to the refraction of light

• Due to the dispersion of light

What is the result of the dispersion of light?

• Formation of shadows

• Production of a spectrum

• Scattering of light

• Reflection of light

Which phenomenon is responsible for the formation of a rainbow?

• Only dispersion

• Only reflection

• Combination of dispersion, refraction, and reflection

• Only refraction

What is the refractive index a ratio of?

• Velocity of light in medium to velocity of light in vacuum

• Sine of angle of refraction to sine of angle of incidence

• Velocity of light in vacuum to velocity of light in medium

• Sine of angle of incidence to sine of angle of refraction

How is the refractive index related to the velocity of light in two media?

• It is the sum of the velocities in both media

• It is the difference of the velocities in both media

• It is the ratio of the velocity in the first medium to the velocity in the second medium

• It is the product of the velocities in both media

What happens to a light ray when it travels from a rarer to a denser medium?

• It bends away from the normal

• It travels undeviated

• It gets absorbed

• It bends towards the normal

When does a light ray travel undeviated between two media?

• When it travels from a rarer to a denser medium

• When it travels from a denser to a rarer medium

• When it is reflected

• When it is incident normal to the interface

What is the relationship between the angle of incidence and the angle of refraction when light travels from a denser to a rarer medium?

• Angle of incidence is equal to angle of refraction

• Angle of incidence is greater than angle of refraction

• Angle of incidence is unrelated to angle of refraction

• Angle of incidence is lesser than angle of refraction