1) What segment of the electromagnetic spectrum is studied by Optics?
a. infrared b. radio waves c. visible light d. x-rays
2) What happens to a light ray when it hits an opaque object? It _____________.
a. is reflected c. will be refracted
b. stops moving d. passes through the object
3) How many images can be formed by two adjacent mirrors at an angle of 600?
a. 3 b. 4 c. 5 d. 6
4) How is the normal line drawn? The normal line is drawn at the point where the
________ hits the surface in such a way that it forms a ______ angle with the
reflecting surface.
a. incident ray; 90-degree c. incident ray; 45-degree
b. reflected ray; 60-degree d. reflected ray; 0-degree
5) Which of the following is/are NOT characteristic/s of an image produced in a
plane mirror?
I. The image formed is real.
II. It is reversed in the right-left direction.
III. It is always smaller than the object being reflected.
IV. The object distance and the image distance are equal.
a. I and IV b. I and III c II and IV d. II and III
6) Why does a convex mirror have a negative focus?
a. It has a focus that is found in front of the mirror.
b. The light rays that hit this type of mirror become parallel.
c. A convex mirror creates an imaginary focus inside the mirror.
d. Light rays that are incident on a convex mirror cannot be reflected.
7) What happens if there is an incident ray that travels along the normal line?
a. It does not get reflected.
b. The light ray will be reflected on the same line.
c. It will pass through the reflecting surface and will disappear.
d. The angle of reflection will have a measurement of 90 degrees.
8) Which statement is TRUE about images formed by curved mirrors?
a. Real images are found in front of the mirror.
b. Virtual images are found in front of the mirror.
c. Images produced are always bigger than real object.
d. Images produced are always smaller than real object.
Assessment
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9) Which of the following sets of values is correct according to the mirror equation?
a. f = -3 cm, p = 8 cm, q = -5 cm c. f = -6 cm, p = -7 cm, q = 42 cm
b. f = 4 cm, p = 8 cm, q = 8 cm d. f = 2 cm, p = -5 cm, q = -10 cm
10) What is the relationship between the focus F, center of curvature C and vertex
V of a curved mirror?
a. The center of curvature is located halfway between the focus and the
vertex of the mirror.
b. The vertex of the mirror is located halfway between the focus and the
center of curvature.
c. The focus is located halfway between the center of curvature and the
vertex of the mirror.
d. The focus is located twice as far as where the center of curvature is
located on the same line as the vertex.
11) Which of the following is an example of specular reflection?
a. image formed by a plane mirror
b. scattering of light as it hits a rough surface
c. rays from a flashlight hitting the surface of a wall
d. how we see objects that are nonluminous in nature
12) How is the virtual image produced by a convex mirror located? It is done by
extending the ______________________.
a. incident rays forward c. reflected rays forward
b. incident rays backward d. reflected rays backward
13) Where will the image be formed if a real object is placed 2 cm in front of a
convex mirror whose focal length is -8 cm?
a. inside the mirror, 8 cm from the vertex
b. inside the mirror, 1.6 cm from the vertex
c. in front of the mirror, 2 cm from the vertex
d. in front of the mirror, 1.6 cm from the vertex
14) How is the reflected ray drawn for an incident ray whose direction is parallel to
the principal axis? It will _________________________.
a. pass through or align with the center of curvature
b. pass through the real focus or align with the virtual focus
c. align with the real focus or pass through the virtual focus
d. follow the direction that is perpendicular with the principal axis
15) What happens when an object if placed at F using a concave mirror?
a. no image will be formed
b. an inverted but enlarged image is formed
c. an upright but diminished image is formed
d. image with the same size as the object is formed
