How we See things

Which of these is not a light source?

• Candle flame

• Sun

• Moon

• Torch

Light from the candle flame travels in which direction?

• In wavy lines

• In zigzag lines

• In random lines

• In straight lines

Light contains many colors. Which of the following is not one of these?

• Green

• Black

• Yellow

• Red

What happen when light hits a shiny and smooth surface?

• It bounces off the material, changing direction.

• It is absorbed by the material

• It forms a rainbow

• It passes completely through the material

How does an opaque material affect light?

• It allows all light to travel through it

• It allows some light to travel through it

• It bends the light which passes through it

• It allows no light to travel through it

Light reflects off which of these materials?

• A mirror

• Football

• Glass

• Nearly every material will reflect light

Which of the following materials is not translucent?

• A glass sheet

• Tissue paper

• Frosted glass

• Butter paper

Which of the the following would reflect the most light?

• A smooth, shiny object with flat surfaces

• An object with a crumpled surface

• A rough object with curved surfaces

• A dark, shiny object with curved surfaces

When we are able to see the object?

• We are able to see when the sun is outside.

• We are able to see when light shines on the eyes.

• We are able to see the object when light from the torch enters our eyes.

• We are able to see the object when reflected light from the object enters our eyes.

Law of reflection is?

• Angle of reflection = Angle of refraction

• Angle of incidence = Angle of reflection

• Angle of reflection is > Angle of incidence

• Angle of incidence is < Angle of reflection