WorksheetsLight: Mirrors and Lenses
Total questions: 20
Worksheet time: 14mins
You see the reflection of the clock without numbers in your plane mirror. The image formed by the hands of the clock shows the time of 3:30. What is the real time?
3:30
8:30
9:30
10:30
How much larger will your classroom seem to appear if the entire two adjacent walls of your classroom consist of plane mirrors?
2x larger
3x larger
4x larger
can't be determined
Where is the image located if an object is 30 cm in front of convex mirror with a focal length of 20 cm?
between F and V
between C and F
in front of the mirror
can't be determined
What is the distance of your image from you if you stand 1.5 m in front of a plane mirror?
1.5 m
2.0 m
3.0 m
4.5 m
Zed stands 1.5-m tall in front of a plane mirror. What is the height of his image?
4.5 m
3.0 m
2.0 m
1.5 m
A light ray, travelling parallel to a concave mirror's axis, strikes the mirror's surface. The reflected ray _________.
passes through the mirror's focal point
again travels parallel to the mirror's axis
travels at right angles to the mirror's axis
passes through the mirror's center of curvature
An object is placed between a concave mirror and its focal point. What is the type and orientation of the image formed?
virtual and inverted
real and inverted
virtual and erect
real and erect
What kind of mirror is used in automobiles and trucks to give the driver a wider area and smaller image of traffic behind him?
plane mirror
convex mirror
concave mirror
none of the above
What type of mirror do dentists usually use to see clearly the images of our teeth?
plane mirror
convex mirror
concave mirror
none of the above
When a small object is placed on the principal axis of a concave mirror between the focus and the mirror, the image formed is _____________.
upright, magnified, and virtual
inverted, magnified, and real
inverted, reduced, and real
upright, reduced, and real
A white sheet of paper cannot act as mirror because it ______ the rays of light.
diffracts
diffuses
interferes
refract
You see your face clearly if you look down on a pool of still water. Which one of the following statements give the best explanation for this observation?
Light entering the water is dispersed.
Regular reflection of light happens on the surface of still water.
Irregular reflection of light happens on the surface of still water.
Light is reflected from the surface of water in different directions.
Where should the object be placed in front of a concave mirror to form a virtual and magnified image?
at the focus
at the center of curvature
between the focus and the vertex
between the center of curvature and focus
Which of the following is true of a concave mirror?
It will never form a real image.
An inverted image will be formed if the object distance is greater than the focal length.
An object can be magnified if placed at F.
A light ray, travelling parallel to a concave lens' axis and strikes the lens, will refract and __________.
pass through the lens' focal point
travel parallel to the principal axis
continue to travel in the same direction
travel at right angles to the principal axis
What kind of image is formed by concave lenses?
always real
always virtual
could be real or virtual; depend on the distance of the object from the focal point
could be real or virtual, but always real when the object is placed at the focal point
Sun's rays are observed to focus at a point behind a lens. What kind of lens was used?
converging lens
diverging lens
focusing lens
none of the above
This optical instrument uses two convex lenses to make a smaller object larger.
camera
microscope
oscilloscope
telescope
Which of the following optical instruments will be used to produce a reduced and inverted image of a distant object?
camera
projector
microscope
refracting telescope
A photocopy "Xerox" machine produces an image that is of equal size as the object. Considering the location of an object in a convex lens, where is the object located or placed to produce an image that is of equal size to the object?
at F'
at 2F'
between F' and V
between 2F' and F'
