Reflection and Refraction

The ray of light that strikes a reflecting surface is called ________.

• incident ray
• reflected ray
• normal ray
• none of the above

The imaginary line perpendicular to a reflecting surface is called _____.

• crooked line
• parallel line
• angular line
• normal line

What is the line MN called in the given diagram
                               

• incident ray
• reflected ray
• reflecting surface
• normal

What is A?

• Angle of incidence
• Angle of reflection
• Incident ray
• Reflected ray

Law of reflection state that - The angle of incidence is .................. to the angle of reflection.

• equal
• double
• half

The diagram shows

• refraction of light.

• absorption of light.

• reflection of light.

• scatter of light.

What is the conclusion from your observation in this picture?

• Light travels in a straight line

• Light can be refracted

• Light can be reflected

• Light can pass through a transparent material

When light passes from air to water, what happens to the speed of the light?

• speeds up

• slows down

• stays the same

What is the angle of reflection (θ_r) in the image?

• 56^o

• 90^o

• 124^o

• 34^o

Light has the lowest velocity in which medium?
flint glass n=1.70
barium glass n=1.60
crown glass n=1.523
water n=1.33
diamond n=2.45

• diamond
• water
• flint glass
• barium glass