Geometric Optics PhET

In the simulation, adjust the curvature of a lens and observe the effect on light. What happens when light passes through a convex lens when the object is NOT located between the lens and the focal point?

• The light is scattered in all directions.

• The light converges at a single point.

• The light is absorbed by the lens.

• The light is refracted to the sides.

Tags

NGSS.MS-PS4-2

In the simulation, observe how light behaves when it passes through a concave lens. What happens when light passes through a concave lens?

• The light converges to a single point.

• The light spreads out (diverges).

• The light is absorbed by the lens.

• The light bends toward the normal.

Tags

NGSS.MS-PS4-2

In the simulation, observe the effect of increasing the distance between an object and a convex lens. What happens to the image formed by a convex lens as the object is moved farther from the lens?

• The image becomes larger.

• The image becomes smaller.

• The image remains the same size.

• The image becomes blurry.

In the simulation, observe the behavior of light when it reflects off a concave mirror when the object is NOT located between the mirror and focal point. What happens to the light rays after they reflect off a concave mirror?

• The rays converge at a point in front of the mirror.

• The rays diverge and spread out.

• The rays reflect back in parallel directions.

• The rays pass through the mirror.

Tags

NGSS.MS-PS4-2

In the simulation, observe how the angle of incidence affects the reflection of light off a mirror. What happens when the angle of incidence increases?

• The angle of reflection decreases.

• The angle of reflection increases.

• The angle of reflection stays the same.

• The light is refracted.

Tags

NGSS.MS-PS4-2

How does the focal length of a lens affect the magnification of an image? (Provide a brief explanation of the relationship between focal length and magnification. Be sure to include differences in convex and concave lenses and object location relative to the focal point.)