# Light Waves: Question Preview (ID: 11036)

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The study of light and the tools that use light
a) law of reflection
b) reflection
c) refraction
d) optics

According to the law of reflection, a light ray striking a mirror
a) continues moving through the mirror in the same direction
b) bounces off the mirror at the same angle it hits
c) bounces off the mirror toward the direction it cames from
d) moves into the mirror at a slightly different angle

What shape is a mirror that reflects parallel light rays towards a focal point?
a) convex
b) regular
c) flat
d) concave

A ray of sunlight moves from the air into the denser medium of a pond. The light ray will
a) be reflected
b) not be affected
c) slow down
d) speed up

A convex lens brings rays together at a focal point. The distance from the center of the lens to the focal point is called the
a) focal length
b) image length
c) focal distance
d) focal point

Isaac uses a convex lens to create an upside-down image of an object. The image is smaller than the object. The object must be located
a) on the same side of the lens as the image
b) more than two focal lengths away from the lens
c) less than one focal length away from the lens
d) exactly at the focal point of the lens

A convex lens
a) Always forms a right side up image
b) has no focal length
c) brings light rays together at a focal point
d) spreads white light into a color spectrum

A concave lens produces
a) image identical to the object
b) upside down image
c) images upside down and smaller than the object
d) only right side up images

Convex mirrors
a) Curved inward, light rays spread out
b) Curved inward, light rays meet at a focal point
c) Curved outward, light rays spread out
d) curved outward, light rays meet at a focal point

The amount and direction that a light ray bends when it enters a new medium depend on the
a) angle of incidence
b) density of the medium
c) speed of sound
d) amount of water in a medium

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