light waves

which of the following is not a property of the image formed by a [lane mirror?

• virtual and erect

• Object size = image size

• object distance = image distance

• Real and inverted

The type of mirror used in reflector in automobile lights is

• Plane mirror

• Concave mirror

• Convex mirror

• None of the above

A ray of light travels from air into a glass block.

Which diagram correctly shows the path of the ray through the glass block?

• A

• B

• C

• D

Why does the straw appear to be bent?

• light is reflected

• light is absorbed

• light is turned

• light is refracted

Why is the component of color in a rainbow can be seen when light passes through a glass prism?

• phenomena of scattering of light

• phenomena of dispersion of light

• phenomena of reflection of light

• phenomena of diffraction of light

Why is the spectrum of light separated into its components of color when white light is directed to a prism?

• Because light reflects off the prism's surface

• The incident white light refracts and separates into its constituent colors

• The white light is absorbed by the prism, separating its colors

• The light speeds up as it moves from air into the denser plastic material

When angle of incident (i) equals to critical angle (c) if light is traveled from a denser medium to a less dense medium,

• total internal reflection occurs.

• angle of refraction is equal to 90 degree.

• light is refracted out

• light travel in straight line

Why does the pencil appear bent?

• Light rays travelling from parts of the pencil above the water bend away from the normal and appear closer to the horizontal surface, thus making the pencil appear broken.

• Light rays travelling from parts of the pencil above the water bend towards from the normal and appear closer to the horizontal surface, thus making the pencil appear broken.

• Light rays travelling from parts of the pencil under the water bend away from the normal and appear closer to the horizontal surface, thus making the pencil appear broken.

• Light rays travelling from parts of the pencil under the water bend towards from the normal and appear closer to the horizontal surface, thus making the pencil appear broken.

What happens to the speed of light in a more optically dense medium?

• it slows down

• it speeds up

• stays the same because all light travels at the speed of light

Choose the TWO conditions that are NOT correct for total internal reflection to take place

• The incident angle should be less than the critical angle

• The incident angle should be greater than the critical angle

• Light should travel from a denser to a lighter medium

• Light should travel from a lighter to a denser medium