Mc chpt. 22
Terms
undefined, object
copy deck
- The bending of light is known as
- refraction
- When a ruler is placed in a water at an oblique ange, besides appearing bent the ruler appears to be
- magnified
- When light enters a medium such as water or glass from the air, its speed
- decreases
- When light passes at an oblique angle from a medium that is less dense to a new medium that is more dense it,
- bends toward the normal
- As the angle of incidence of a ray is greater than the critical angle, the ray
- is reflected by the surface of the medium
- As the angle of incidence of a ray increases the angle of refraction
- increases
- An example of total internal reflection occurs when light passes through
- lucite
- A lens that is thicker in the middle than at the ends is called
- convex
- When light passes at an oblique angle from a medium that is less dense to a medium that is more dense it,
- travels in a straight line
- When parallel rays of light pass through a convex lense they are
- converged
- Lenses that seperate parralel light rays are called
- concave
- An image that can be projected on a screen is called
- real
- A virtual image is seen when we use a
- magnifying glass
- In order to produce an image that is real , inverted and smaller than the object, the object is placed
- beyond 2F
- When the object on a principal axis is exactly on 2F, the image is formed on a screen at a point that is
- at 2F
- When an object is placed at the princial focus of a convex lens, the rays emerging from the opposite side of the lens
- are parallel
- Compared to the object , imges produced by concave lenses are
- virtual, upright, and smaller
- A reflecting telescope consists of a convex lens, a plane mirror, and a
- concave mirror
- Eyeglasses used by nearsighted people consist of lenses that are
- concave
- Of the colors of light, the color that is refracted the most when passing through a prism is
- violet
- The band of colors of light, ranging from red to violet is called a
- spectrum
- Electromagnetic waves that tan the skin are
- ultraviolet waves
- A transparent object is the color of the light that the object
- transmits
- When a beam of red light shines on a piece if blue glass, the glass apears to be
- black
- When an object reflects all light,it appears to be
- white