Reflection and Refraction of Light (Coordinated Physics)

What is the name of a line drawn at 90⁰ to the surface of a material?

• Boundary

• Incident

• Normal

• Reflected

Which term is used to refer to an incoming ray?

• Refracted

• Incident

• Normal

• Reflected

What is the law of reflection?

• Angle of incidence= angle of reflection

• Angle of incidence < angle of reflection

• Angle of incidence > angle of reflection

Which is densest- air, water or glass?

• air

• water

• glass

What happens to a light ray when it travels from water into air? (CLUE: FAST TOWARD SLOW AWAY)

• It bends towards the normal

• It slows down

• It bends away from the normal

Which word is used to describe a light ray being passed through a material?

• Transmitted

• Absorbed

• Reflected

• Refracted

A light ray meets a plane mirror at 60⁰ . What is the angle of reflection?

• 60 degrees

• 30 degrees

• 120 degrees

• 180 degress

A light ray passes from air into water at an angle of 30⁰ . Which of these angles is likely to be the angle of refraction?

• 30 degrees

• 22 degrees

• 38 degrees

At the boundary, when light passes from air into glass

• it always changes direction

• It sometimes changes direction

• It never changes direction

What happens to the speed of light when it passes from air into glass?

• it increases

• it does not change

• it decreases