Exam 36: Image Formation

The object in a ray diagram is perpendicular to the principal axis but does not have one end lying on the principal axis. The minimum number of rays that must be drawn in this ray diagram in order to determine the position of the image is

Suppose an object is placed 6.0 cm in front of a lens that has a focal length of 4.0 cm. Where is the image located? What are the magnification and the character of the image?

A concave mirror has a focal length of 20 cm. What is the magnification if the object's distance is 100 cm?

An object 15 cm high is placed 15 cm in front of a convex mirror with a focal length of −10 cm. What is the image height (in cm)?

The actual depth of a shallow pool 1.00 m deep is not the same as the apparent depth seen when you look straight down at the pool from above. How deep (in cm) will it appear to be? (n_water = 1.33.)

A concave mirror has a radius of curvature of 1.0 m. An object is placed 2.0 m in front of the mirror. Determine the location of the image (in cm).

A compound microscope is made with an objective lens (f₀ = 0.900 cm) and an eyepiece (f_e = 1.10 cm). The lenses are separated by a distance of 10.0 cm. What is the angular magnification? (Assume the near point is 25.0 cm.)

An object is placed 15 cm in front of a concave mirror with a focal length of 30 cm. What is the magnification?

When you stand in front of a convex mirror, the image you see is

An object is placed 15 cm in front of a diverging lens whose focal length is 12 cm. Where will the image be located (in cm)?

A clown 2 m tall looks at himself in a full-length mirror (floor-to-ceiling). Where in the mirror must he look to see his feet?

A magnifying glass has a convex lens of focal length 15 cm. At what distance from a postage stamp should you hold this lens to get a magnification of +2.0?

If you stand closer to a concave mirror than a distance of one focal length, the image you see is

An object 20-cm high is placed 50.0 cm in front of a lens whose focal length is 5.00 cm. Where will the image be located (in cm)?

A soda straw is stuck into water at an angle of 36° to the vertical. Looking straight down, what does the angle of the submerged portion of the straw to the vertical appear to be?

Of the possible statements that parallel rays are brought to a focus by a 1) Concave mirror, 2) Convex mirror, 3) Converging lens, 4) Diverging lens, The correct answer is

If a convex lens were made out of very thin clear plastic filled with air, and were then placed underwater where n = 1.33 and where the lens would have an effective index of refraction n = 1, the lens would act in the same way

A concave mirror with a radius of curvature of 1.0 m is illuminated by a candle located on the symmetry axis 3.0 m from the mirror. Where is the image of the candle?

A camera has a converging lens with a focal length of 56 mm. If the f-number is 2.8, what is the diameter of the lens (in mm)?

A concave mirror has a focal length of 20 cm. What is the position (in cm) of the object if the image is upright and is two times larger than the object?