AP Physics 2 Optics

The distance from the lens to the retina is shortened because the shape of the eyeball is more flattened. Light rays focus behind the retina instead of directly upon it.

• nearsightedness

• far farsightedness

Many farsighted people wear glasses because the shape of their eyeball is shorter than normal. What kind of lenses would be in those glasses?

• convex

• concave

Which of these is the cause of nearsightedness?

• Eyeball is too long

• Eyeball is too short

which type of lens will help correct this vision problem

• convex

• concave

• opaque

• plano

Which part of the camera focuses light?

• sensor

• shutter

• lens

Which one of the following is true both for human eye and digital camera?

• the sensor detects light.

• the aperture controls the amount of light that enters.

• the lens focuses the light.

Which part of your eye is most like the film in a camera?

• The iris

• The retina

• The pupil

• The lens

A student is building a model of a lens that will spread light over the biggest space. Which best describes the type of model the student should make?

• The student should make a convex lens model because it breaks light down into bands of color.

• The student should make a concave lens model because it breaks light down into bands of color.

• The student should make a convex lens model because it directs light away from the center of the lens.

• The student should make a concave lens model because it directs light away from the center of the 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.

The time line below shows how the use of lenses to magnify objects has changed over the last 2,000 years. What does the time line suggest about scientific knowledge throughout the years?

• It suggests that scientific knowledge began when the first convex lens was developed, since complex lenses opened the door to all scientific studies.

• It suggests that scientific knowledge changes over time, as shown by the new discoveries made about lenses leading to changes in their uses.

• It suggests that scientific knowledge does not change, as scientists work independently of each other and do not build on each other's ideas.

• It suggests that scientific knowledge is replaced and not modified, as exemplified by the single lens replacing multiple lenses.