CH18
It passes through the focal point of the mirror.
A beam of light that is parallel to the principal axis strikes a concave mirror. What happens to the reflected beam of light?
It appears to be coming from the focal point on the other side of the mirror.
A beam of light that is parallel to the principal axis strikes a convex mirror. What happens to the reflected beam of light?
It slows down. It bends closer to the normal at the point of contact.
A beam of light traveling in air strikes a glass slab at an angle of incidence less than 90°. After entering the glass slab, what does the beam of light do? (There could be more than one correct choice.)
of f.
A convex lens has focal length f. If an object is located at "infinity" (very far away), the image formed is located at a distance from the lens
the image is inverted, and the mirror is concave.
A negative magnification for a mirror means that
The image is upright and virtual. The lens could be either a converging or a diverging lens, and the image is upright
An object is placed on the left side of a thin lens, and the image of this object is formed on the left side of the lens. Which of the following statements must be true? (There could be more than one correct choice.)
real and inverted
An upright object is 50 cm from a concave mirror of radius 60 cm. The character of the image is
a. is always the same size.
As you walk away from a plane mirror on a wall, the height of your image
Virtual upright
If a object is placed between a convex lens and its focal point, the image formed is
R/2.
If a spherical concave mirror has a radius of curvature R, its focal length is
virtual image
If the image distance is positive, the image formed is a
greater than the angle of incidence.
Light enters air from water. The angle of refraction will be
less than the angle of incidence.
Light enters glass from air. The angle of refraction will be
n1 > n2
Light goes from material having a refractive index of n1 into a material with refractive index n2. If the refracted light is bent away from the normal, what can you conclude about the indices of refraction?
could be smaller than, larger than, or the same size as the actual object, depending on the placement of the object.
Single concave spherical mirrors produce images that
are always smaller than the actual object.
Single convex spherical mirrors produce images that
The image eventually changes from real to virtual.
Starting from very far away, an object is moved closer and closer to a converging lens, eventually reaching the lens. What happens to its image formed by that lens? (There could be more than one correct choice.)
It would be best to use a concave mirror, with the object to be ignited positioned halfway between the mirror and its center of curvature.
Suppose you wanted to start a fire using a mirror to focus sunlight. Which of the following statements is most accurate?
totally reflected
The critical angle for a beam of light passing from water into air is 48.8°. This means that all light rays with an angle of incidence in the water that is greater than 48.8° will be
is always virtual.
The image formed by a single concave lens
greater than the angle of incidence.
The index of refraction of a type of glass is 1.50, and the index of refraction of water is 1.33. If light enters water from this glass, the angle of refraction will be
The image is always virtual. The image is always upright.
Which of following statements about the image formed by a single diverging lens are true? (There could be more than one correct choice.)
A convex mirror always produces a virtual image. A convex mirror always produces an upright image
Which of the following statements about spherical mirrors is correct? (There could be more than one correct choice.)
diverging lenses concave lenses
Which of the following terms describe lenses that are thinner at the center than at the edges? (There could be more than one correct choice.)
1
Which one of the following numbers is the correct magnification produced by a plane mirror?
virtual and upright
Which one of the following sets of characteristics describes the image formed by a plane mirror?
A diverging lens always produces a virtual upright image.
Which statement about a single thin lens is correct?
A virtual image cannot be formed on a screen.
Which statements about images are correct?
