Exam 26: The Refraction of Light: Lenses and Optical Instruments

A fish swims 4.0 m below the surface of a still lake as shown in the figure.When an archer attempts to shoot the fish,the arrow enters the water at point P that is a horizontal distance 1.2 m from the fish. -If the archer is successful in shooting the fish,what angle does the arrow make with the horizontal as it enters the water?

A 4.0-cm object is placed 30.0 cm from a converging lens that has a focal length of 10.0 cm as shown in the diagram. Note: The diagram is not drawn to scale. -Determine the height and orientation of the image.

A certain type of glass is used in making flat-panel computer monitors.For light with a wavelength in air of 656.3 nm,the refractive index of the glass is = 1.5160.For light with a wavelength in air of 435.8 nm, = 1.5290.Determine the difference,,in their wavelengths inside the glass.

A beam of light that consists of a mixture of red,green and violet light strikes a prism (surrounded by air)as shown.Indices of refraction for this prism for the various colors are indicated in the table.An observer is located to the right of the prism as shown. -Which color(s)could,in principle,be seen by the observer?

Joseph uses a converging lens (f = 0.12 m)to read a map located 0.080 m from the lens.What is the magnification of the lens?

The figure is a scaled diagram of an object and a converging lens surrounded by air.Only one focal point,F,of the lens is shown. -The index of refraction of this lens is 1.51 for red light and 1.53 for blue light.Blue light is focused at the point F.Which one of the following statements is true concerning the focal point for red light?

A beam of light that consists of a mixture of red,green and violet light strikes a prism (surrounded by air)as shown.Indices of refraction for this prism for the various colors are indicated in the table.An observer is located to the right of the prism as shown. -Which physical phenomenon is illustrated by the fact that the prism has different refractive indices for different colors?

Mrs.McKay has been prescribed eyeglasses with lenses that have a +3.2-diopter refractive power.The glasses are worn 2.0 cm from her eyes.With the lenses,she can read a magazine held 25 cm from her eyes.Which one of the following statements is necessarily true? Note: The near points and far points given in the following answers are measured relative to her eye.

A 4.0-cm object is placed 30.0 cm from a converging lens that has a focal length of 10.0 cm as shown in the diagram. Note: The diagram is not drawn to scale. -A second converging lens is placed 20.0 cm to the right of the lens shown in the figure.Determine the focal length of the second lens if an inverted image (relative to the object in the diagram)is formed 13.3 cm to the right of the first lens.

A fiber optic line is composed of a core with an index of refraction of 1.51 and cladding with an index of 1.40.Which one of the following relations best describes angles of incidence that will result in total internal reflection within the fiber optic line?

A 4.0-cm object is placed 30.0 cm from a converging lens that has a focal length of 10.0 cm as shown in the diagram. Note: The diagram is not drawn to scale. -Where is the image located?

A diverging lens has a focal length of -15 cm.A 5-cm object is placed 35 cm from the lens. -Determine the approximate distance between the object and the image.

The figure shows the path of a ray of light as it travels through air and crosses a boundary into water.The index of refraction of water for this light is 1.33. -What is the speed of this ray of light as it travels through the water?

An object is placed 6.5 cm from a thin converging lens with a focal length of 14 cm.Which one of the following statements is true concerning the image?

Which one of the following statements is true concerning a magnifying glass?

Two converging lenses,each with a focal length of 0.080 m,are used in combination to form an image of an object that is located 0.24 m to the left of the left lens in the pair.The distance between the lenses is 0.16 m. -Where is the final image located relative to the lens on the right?

The figure is a scaled diagram of an object and a converging lens surrounded by air.Only one focal point,F,of the lens is shown. -The system is immersed in a fluid other than air that has an index of refraction that is larger than that of the lens.Which one of the following statements is true concerning this new situation?

In her biology class,Chris examines an insect wing under a compound microscope that has an objective lens with a focal length of 0.70 cm,an eyepiece with a focal length of 3.0 cm,and a lens separation distance of 16.00 cm.Chris has a near point distance of 22.5 cm.What is the approximate angular magnification of the microscope as Chris views the insect wing?

A child is looking at a reflection of the sun in a pool of water.When she puts on a pair of Polaroid sunglasses with a vertical transmission axis,she can no longer see the reflection.At what angle is she looking at the pool of water?

When an object is placed 25 cm from a lens,a real image is formed.Which one of the following conclusions is incorrect?