Various Light Phenomena

Match

Match the following.

• CONCAVE

• CONVEX

Converging Mirrors

Diverging Mirrors

CONCAVE

CONVEX

• Converging Mirrors

• Diverging Mirrors

• CONCAVE

• CONVEX

Multiple Choice

What causes the bending of light in a mirage?

• The change in speed of light results in change of direction as it passes from a cool air to a hot air

• The change in speed of light results in the same direction as it passes from a cool air to a hot air

• The change in speed of light results in change of direction as it passes from air to land

• All of the choices are correct

The red cellophane absorbs all wavelengths of the light that comes from the laser except for the red wavelength.

Light from a red laser passes more easily though red cellophane than green cellophane

Multiple Choice

Why does a red laser pass more easily through a red cellophane than a green one?

• All wavelengths can pass through the cellophane except the red wavelength.

• The red cellophane absorbs all wavelengths of white light except for the red wavelength.

• The cellophane absorbs all wavelengths of white light except for the green wavelength.

• There is no contrast between two different colors caused by multiple wavelengths of light so the colors cannot be distinguished from one another

Multiple Choice

Clothes viewed under artificial light in a shop appear to have a slightly different color when viewed outside. Why does this happen?

• It depends on the type of fabric on clothes.

• Other light source will reflect all wavelengths, minus those absorbed.

• The appearance of the material is not limited to the color of the light falling upon it.

• Other light source may not include all wavelengths and therefore other colors cannot be reflected.

Multiple Choice

What is the term for various circles or arcs of light around the sun or moon, caused by refraction of light?

• Halo

• Mirage

• Sundog

• Supernumerary bows

Multiple Choice

When does a supernumerary bows occur?

• When raindrops responsible for the main rainbow are much uniform in size

• It is caused by refraction of light as it moves through ice crystals in the atmosphere

• It is a type of halo consisting of a pair of bright spots to the left and right of the Sun.

• It appears when light entering a raindrop undergoes two internal reflections instead of just one

Multiple Choice

What type of mirror is also known as converging mirror because light converges at a point when it strikes and reflects from the reflecting surface?

• Concave mirror

• Convex mirror

• Plane mirror

• Spherical mirror

Multiple Choice

What is the term for various circles or arcs of light around the sun or moon, caused by refraction of light?

• Halo

• Mirage

• Sundog

• Supernumerary bows

Multiple Choice

Why does a red laser pass more easily through a red cellophane than a green one?

• All wavelengths can pass through the cellophane except the red wavelength.

• The red cellophane absorbs all wavelengths of white light except for the red wavelength.

• The cellophane absorbs all wavelengths of white light except for the green wavelength.

• There is no contrast between two different colors caused by multiple wavelengths of light so the colors cannot be distinguished from one another

Multiple Choice

Clothes viewed under artificial light in a shop appear to have a slightly different color when viewed outside. Why does this happen?

• It depends on the type of fabric on clothes.

• Other light source will reflect all wavelengths, minus those absorbed.

• The appearance of the material is not limited to the color of the light falling upon it.

• Other light source may not include all wavelengths and therefore other colors cannot be reflected.

Multiple Choice

Which sky color results when light is scattered in large particles of pollution or dust?

• Blue

• Grayish white

• Orange/Red

• White

Multiple Choice

Which color of the visible light spectrum has a longer wavelength?

• Blue

• Green

• Red

• Yellow

Open Ended

Why is the sky blue at midday while sunsets are reddish?

Open Ended

Why are clouds usually white and rain clouds dark?