Light Interactions: Reflection, Refraction, and Transmission Explained

The video tutorial explains how light interacts with objects, focusing on reflection, transmission, and absorption. It introduces refraction as the bending of light when it moves between different media, such as air and glass. The tutorial also covers the concepts of angles of incidence and refraction, and poses questions for further exploration in future videos.

What happens to light when it hits an opaque object?

• It is mostly transmitted.

• It bends at the surface.

• It is mostly absorbed and/or reflected.

• It passes through without any change.

Which of the following is an example of a transparent object?

• Glass

• Wood

• Metal

• Mirror

What is the basic definition of refraction?

• The transmission of light through a medium.

• The bending of light when it travels from one medium to another.

• The reflection of light off a surface.

• The absorption of light by a medium.

What does it mean when light is incident 'obliquely'?

• The light is slanting, neither parallel nor at a right angle.

• The light is parallel to the surface.

• The light is at a right angle to the surface.

• The light is absorbed by the surface.

What is the medium called from which light is incident?

• Refractive medium

• Incident medium

• Transparent medium

• Opaque medium

What is the line called that is drawn perpendicular to the surface at the point of incidence?

• Refractive

• Parallel

• Normal

• Oblique

What is the angle called that is made by the incident ray with the normal?

• Angle of refraction

• Angle of reflection

• Angle of incidence

• Angle of transmission

What is the angle called that is made by the refracted ray with the normal?

• Angle of incidence

• Angle of reflection

• Angle of transmission

• Angle of refraction

Why does light change direction when entering a new medium at an angle?

• Because it is absorbed by the medium.

• Because it is reflected by the medium.

• Because of the change in speed in different media.

• Because it is transmitted without change.

Can refraction occur if light enters perpendicular to the surface?

• No, it will be absorbed.

• Yes, but only if the medium is opaque.

• No, it will not bend.

• Yes, it will still bend.