SNC2D GIZMO Ray Tracing Mirrors

Which of the following statement about a "concave mirror" is INCORRECT?

• a mirror that curves inward

• The bowl of a spoon is an example of a concave mirror.

• A concave mirror also is called a “converging mirror” because it causes reflected light rays to converge at a point.

• None of the other three statements are INCORRECT.

Which of the following statements about a "convex mirror" is INCORRECT?

• a mirror that curves outward

• The back of a spoon is an example of a convex mirror.

• A convex mirror also is called a “diverging mirror” because it causes reflected light rays to spread out.

• None of the other three statements are INCORRECT.

T/F - The focal length of a mirror is the distance between the focal point and the middle of the mirror

• True

• False

The focal point is the point at which parallel light rays converge after reflecting off a mirror.

• True

• False

The focal point of a convex mirror is the point from which originally parallel light rays appear to be emanating after reflecting off the mirror.

• True

• False

The ratio of image size to object size.

• magnification

• amplification

• intensification

If the image of an object with a height of 2.8 cm is 5.6 cm high, the magnification is .

• 2

• 1.5

• 2.5

• 3

Which of the following statements about a "real image in a convex or concave mirror" are INCORRECT.

• It forms where light rays converge.

• If a screen is placed at the location of a real image, the image will be visible on the screen.

• Real images are inverted and located on the same side of a mirror as the object.

• None of the following statements are INCORRECT.

Which of the following statements about an "virtual image in a convex or concave mirror" are INCORRECT?

• No light rays are focused onto the virtual image. Therefore, a virtual image cannot be projected onto a screen as a real image could.

• An image that is visible to an observer only when the observer looks into a mirror or lens.

• Virtual images are upright and located on the opposite side of a mirror from the object.

• None of the following statements are INCORRECT.

You place a light bulb 8 cm in front of a concave mirror. You then move a sheet of paper back and forth in front of the mirror. The image of the light bulb focuses on the paper when the paper is 12 cm in front of the mirror.

What is the focal length of the mirror?

• 4.8 cm

• 4.2 cm

• 20 cm

• 6.0 cm