Light Reflection and Refraction Concepts

The video tutorial introduces the properties of light, including its speed in a vacuum, how it travels in straight lines, and its interaction with opaque objects. It explains how light behaves in different mediums, affecting its speed and direction. The concept of reflection is covered, detailing how light reflects off surfaces and the difference between specular and diffuse reflection.

What is the approximate speed of light in a vacuum?

• 3 x 10^8 meters per second

• 3 x 10^6 meters per second

• 3 x 10^10 meters per second

• 3 x 10^12 meters per second

How long does it take for light to travel from the Sun to Earth?

• About 12 minutes

• About 10 minutes

• About 8 minutes and 17 seconds

• About 5 minutes

What happens to light when it is not obstructed?

• It scatters

• It travels in a straight line

• It stops

• It bends

Which type of material allows light to pass through completely?

• Transparent

• Translucent

• Reflective

• Opaque

What is formed when light cannot pass through an opaque object?

• A refraction

• A shadow

• A glow

• A reflection

In which medium does light travel the fastest?

• Water

• Glass

• Vacuum

• Air

What happens to light when it enters a denser medium?

• It speeds up

• It bends towards the normal

• It bends away from the normal

• It stops

What is the angle of incidence equal to in reflection?

• Angle of diffusion

• Angle of reflection

• Angle of absorption

• Angle of refraction

What type of reflection occurs on a smooth and shiny surface?

• Refracted reflection

• Diffuse reflection

• Scattered reflection

• Specular reflection

What type of reflection occurs on a rough surface?

• Diffuse reflection

• Specular reflection

• Scattered reflection

• Refracted reflection