What Behaviors Does Light Exhibit

What behaviors does light exhibit?

How does regular reflection differ from diffuse reflection?

Does the law of reflection hold for diffuse reflection? Explain.

What is meant by the phrase "normal to the surface"?

How does the angle of incidence compare with the angle of refraction when a light ray passes from air into glass at a non-zero angle?

Describe what happens to a light wave when it meets and travels through a different medium.

State Snell's law in your own words.

What is the critical angle of incidence?

Is it necessary to measure the volume of a glass block to find its optical density? Explain

A light ray strikes the boundary between two transparent media. What is the angle of incidence for which there is no refraction?

In the example problem Snell's law, a ray of light is incident upon crown glass at 30.0°. The angle of refraction is 19.2°. Assume that the glass is rectangular in shape. Construct a diagram to show the incident ray, the refracted ray, and the normal. Continue the ray through the glass until it reaches the opposite edge.

(a) Construct a normal at this point. What is the angle at which the refracted ray is incident upon the opposite edge of the glass? (b) Assume that the material outside the opposite edge is air. What is the angle at which the ray leaves the glass?

(c) As the ray leaves the glass, is it refracted away from or toward the normal?

(d) How is the orientation of the ray leaving the glass related to the ray entering the glass? (hint: use a geometry word)

Which substance, A or B, in Figure 17-16 has a larger index of refraction? Explain.

How does the speed of light change as the index of refraction increases?

How does the size of the critical angle change as the index of refraction increases?

A prism bends violet light more than it bends red light. Explain.

Which color of light travels fastest in glass: red, green, or blue? (look this up in your textbook)

A ray of light strikes a mirror at an angle of 35° to the normal. (a) What is the angle of reflection?

(b) What is the angle between the incident ray and the reflected ray?

A ray of light travels from air into a liquid. The ray is incident upon the liquid at an angle of 34.0°. The angle of refraction is 26.5°. What is the index of refraction of the liquid? A ray of light is incident at an angle of 68.0° upon the surface of a piece of crown glass. What is the angle of refraction?

Light is incident at an angle of 60.2° on the surface of a diamond. Find the angle of refraction.

A beam of light strikes the flat, glass side of a water-filled aquarium at an angle of 35.5° to the normal. For glass, n = 1.50. (a) At what angle does the beam enter the glass?

(b) At what angle does the beam enter the water?

What is the speed of light in diamond? Show your calculations.

A ray of light is incident upon a 60°-60°-60° glass prism, n=1.5 at a 45° angle relative to the normal at the center of one face. (a) Determine the angle, θexit relative to a normal on the opposite face, at which the light leaves the prism. How many more minutes would it take light from the sun to reach Earth if the space between them were filled with water rather than a vacuum? The sun is 1.5 1011 m from Earth.

A block of glass has a critical angle of 45.4°. What is its index of refraction?

Find the critical angle for a diamond-to-air transition.

A ray of light in a tank of water has an angle of incidence of 28°. What is the angle of refraction in air? (Enter 0 if total internal reflection occurs.)

The index of refraction of crown glass is 1.53 for violet light, and it is 1.51 for red light. (a) What is the speed of violet light in crown glass?

(b) What is the speed of red light in crown glass?

How can you prove to someone that an image is a real image?

Why are convex mirrors used as rearview mirrors?

Locate and describe the physical properties of the image produced by a convex lens if an object is placed some distance beyond 2F. Draw a ray diagram. a) Where is the image located compared to the object?

b) Circle one: Erect or Inverted

c) Circle one: Virtual or Real

d) Magnification: Larger, Smaller, or the Same

What factor, other than the curvature of the surfaces of a lens, determines the location of the focal point of the lens?

Locate and describe the physical properties of the image produced by a concave mirror when the object is located at a distance larger than the focal length. Draw a ray diagram.

a) Where is the image located compared to the object?

b) Circle one: Erect or Inverted

c) Circle one: Virtual or Real

d) Magnification: Larger, Smaller, or the Same

The outside rearview mirrors of cars often carry the warning " Objects in the mirror are closer than they appear." What kind of mirror is this and what advantage does it have? If you try to use a magnifying glass underwater, will its properties change? Explain.

A concave mirror has a focal length of 12.0 cm. What is its radius of curvature?

An object is 35.0 cm from a concave mirror of 18 cm focal length. The object is 1.8 cm high. Use the lens/mirror equation to find the image distance.

What is the magnification of the image in the previous problem?

Camera lenses are described in terms of their focal length. A 50.0 mm lens has a focal length of 50.0 mm. Be sure to convert your units! (a) A camera with a 50 mm lens is focused on an object 2.7 m away. Locate the image.

(b) A 830 mm lens is focused on an object 125 m away. Locate the image.