12.1 Refraction

What is refraction?

• The bending or change in direction of light when it travels from one medium into another

• The reflection of light off a surface

• The absorption of light by a material

• The scattering of light in all directions

Why does an object appear disconnected or broken at the water's surface?

• Because the object is actually disconnected

• Because the water distorts the shape of the object

• Because of the phenomenon of reflection

• Because of the phenomenon of refraction

What happens to light when it travels from one medium into another?

• It changes direction and bends

• It continues to travel in a straight line

• It splits into different colors

• It gets absorbed by the new medium

What is the angle of refraction?

• The angle between the incident ray and the normal

• The angle between the refracted ray and the normal

• The angle between the incident ray and the refracted ray

• The angle between the incident ray and the reflected ray

What happens to light when it travels from water into air?

• It bends towards the normal

• It bends away from the normal

• It gets absorbed by the air

• It continues to travel in a straight line

What is the speed of light in a vacuum?

• 3.00 × 10^8 m/s

• 2.26 × 10^8 m/s

• 1.76 × 10^8 m/s

• The speed of light in a vacuum is zero

What is the speed of light in water?

• 3.00 × 10^8 m/s

• 1.76 × 10^8 m/s

• The speed of light in water is zero

• 2.26 × 10^8 m/s

What is the phenomenon called when light is both reflected and refracted at the same time?

• Partial reflection and refraction

• Refraction

• Absorption

• Reflection

What is a silvered two-way mirror?

• A mirror that reflects light in only one direction

• A mirror that allows light to pass through in two directions

• A mirror that reflects light in two directions

• A mirror that allows light to pass through in only one direction

What practical applications can be derived from partial reflection and refraction?

• All of the above

• Mirrored sunglasses

• Reducing air-conditioning costs

• Two-way mirrors in buildings