Concave or Convex Lenses

Which lens represents the path light takes through a concave lens?

• 
• 
• 
• 

Tags

NGSS.MS-PS4-2

Which figure represents the path light takes through a convex lens?

• 
• 
• 
• 

Tags

NGSS.MS-PS4-2

Where are lenses used? (multiple correct)

• Telescopes

• Tables

• Eye-glasses

• Binoculars

Tags

NGSS.MS-PS4-2

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.

Tags

NGSS.MS-PS4-2

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?

• 
• 
• 
• 

Tags

NGSS.MS-PS4-2

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

Tags

NGSS.MS-PS4-2