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WorksheetsConcave or Convex Lenses
Total questions: 15
Worksheet time: 15mins
Which lens represents the path light takes through a concave lens?
Which figure represents the path light takes through a convex lens?
Where are lenses used? (multiple correct)
Telescopes
Tables
Eye-glasses
Binoculars
if the object is beyond C (2F)
image is real, smaller and upright
image is real, smaller and upside down
image is virtual, smaller and upside down
image is real, bigger and upright
A student is creating a model of a concave lens. The diagram shows her incomplete model. Which action would best complete her model?
The student should draw the light moving into the lens and then exiting in converging lines.
The student should draw the rays of light moving into the lens and then exiting at right angles.
The student should draw the rays of light moving into the lens and then exiting in a straight path.
The student should draw the light moving into the lens and then exiting in lines that are spreading out.
A concave lens has an inward curved shape. It refracts light outward from the lens. They light rays spread apart as they exit the lens. Which represents a concave lens?
A
B
A and B
neither A or B
Which model shows what happens when light passes through a convex lens?
A) Ray diagram
B) Wavefront diagram
C) Particle model
D) Diffraction pattern
Which of the following describes a possible application of this type of lens?
Concave lenses can be used in mirrors to make objects appear closer than they truly are.
Concave lenses can be used in laser pointers to converge the projected light to a single point.
Concave lenses can be used in microscopes to make small objects appear larger.
Concave lenses can be used in car headlights to spread the projected light outwards.
Which type of lens is used to correct short-sightedness?
Concave lens
Convex lens
Cylindrical lens
Bifocal lens
What happens to parallel rays of light when they pass through a convex lens?
They diverge
They converge
They remain parallel
They scatter randomly
Which lens would you use to magnify small objects?
Concave lens
Convex lens
Cylindrical lens
Bifocal lens
In a concave lens, what type of image is formed when an object is placed at infinity?
Real and inverted
Virtual and upright
Real and upright
Virtual and inverted
What is the focal length of a lens if the object is placed 10 cm from the lens and the image is formed 20 cm on the same side as the object?
5 cm
10 cm
15 cm
20 cm
Which of the following is a real-world application of a convex lens?
Peephole in doors
Magnifying glass
Rearview mirror
Flashlight reflector
What is the principal axis of a lens?
The line passing through the center and perpendicular to the surface
The line parallel to the surface of the lens
The line passing through the focal points
The line that bisects the lens horizontally
