Light and optics

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If a wave has a frequency of 0.05 hertz and a wavelength of 10 meter,what is the waves speed

0.5 m/s

The speed of light in water is 2.26 * 10^8 m/s. What its index of refraction

1.33

light enters a piece of glass from air at an angle of 20 degrees. It refracts at an angle of 14 degrees. Find the index of refraction of the glass.

1.41

Light passes from air into another medium at 30.0 to the normal. If the angle of refraction is 18.0, what is the index of refraction of the new medium?

1.62

If a wave has a frequency of 0.05 hertz and a velocity of 0.5 m/s, what is the wavelength

10M

An object is placed in front of a convex lens with a 7.00 cm focal lengt,if the object distance is 15.0 cm,what is the image distance?

13.1 cm

If light passesfrom air into water at 40.0 degrees to the normal,what is the angle of refraction?

28.9 degrees

If a light ray reflects off a plane mirror at an angle of 30 degrees to the normal, what is the angle of incidence of the ray ?

30 degrees

A radio station broadcast at a fequency of 950,000 hz. Knowing that the radio waves have a speed of 3.01 * 10^8 m/s, what is the wavelength of these waves

316.84M

A wave traveling at a speed of 200m/s has a wavelength of 0.05m. What is its frequency

4000 HZ

A light beam passes from flint glass (n= 1.62) into ethanol (n=1.36). What is the critical angle for total internal reflection of the light beam ?

57.1 degrees

Describe the orientation of that attached image

Real,inverted,larger

Which statement best describes how a rainbow is produced

airborne water droplets reflect each wavelength of light a slightly different amount causing the colors to seperate

what color pigment is seen after mixing red pigment and cyan pigment

black

Which color carries the most energy in a single photon

blue

White light contains which colors

blue,green,red

Electromagnetic waves

can travel through a vacuum

___________________ are responsible for detecting color

cones

what light is seen when blue light is mixed with green light

cyan

Which type of wave is a light wave

electromagnetic wave

light is an example of which kind of wave

electromagnetic wave

When electrons move from a higher level of the electron orbit to a lower,the atom will

emit light

The two ways that we see light are

emitted or reflected

Infrared waves are responsible for sunburn

false

When red,green, and blue light are combined,the color black would be seen

false

When red,green,and blue light are combined,the color black would be seen

false

If the sun were to disappear right now,we wouldn't know for about 8 minutes because it takes 8 minutes

for light to travel from the sun to the earth

Different colors of light correspond to different light

frequencies

The number of waves or cycles per sec. inverse of the period

frequency

Which of the following electromagnetic waves has the highest frequency

gamma rays

which of the following electromagnetic waves has the highest frequency

gamma rays

What determines whether a surface produces a specular reflection or a diffuse reflection?

how smooth the surface is relative to the wavelength of the light

how to tell if an image is upright or inverted

image on opposite sides is upright,and an image on the same side is inverted

Are convex mirrors real or virtual

in a convex mirror the image is always virtual

Heat lamps give off mostly

infrared

a negative indicates that the image is

inverted

Which statement is true about the image produced by a plane mirror?

it appears to have reversed front and back,relative to the object

light enters glass (n=1.5) fromwaters (n=1.3) at a 30 degree angle. What is the refraction angle of the light?

less than 30 degrees

Total internal reflection occurs when the incident angle is greater than the critical angle and

light is going from a high to low index of refraction

Total internal reflection occurs when the incident angle is greater than the critical angle and

light is going from a high to low index refraction

What type of magnification is produced by a plane mirror

no magnification

Linearly polarized light consists of waves _________________ in the same place

oscillating

Which of the following lists of electromagnetic waves is in order of increasing energy

radio,microwave,infrared,visible,ultraviolet,gamma

Image that is located on the sameside of the mirror as the object

real and inverted

Which of the following colors of visible light has the longest wavelength

red

which set of colors constitute the primary light colors

red,blue,green

The diagram shows rays of light reflected from a convex mirror. Which describes the image size and orientation for this mirrpr?

reduced, upright

Which of the following is not an electromagnetic wave

sound waves

The law of reflection says that

the angle of reflection is equal to the angle of incidence

A diverging lens is needed for nearsighted people because

the eye is focusing light in front of the retina

When the image distance is negative,the image is behind the mirror

the image is virtual and upright

what happens when light enters a region with a higher index of refraction?

the light slows down and bends toward the normal

The source of all elctromagnetic waves is

the movement of electrons

What does the letter "c" represent in this unit?

the speed of light

Which of the following explains the law of reflection?

the wave model of light

light follows the law of reflection because of the way light waves reflect from surfaces

the wave model of light

Infrdred waves are respomsible for suburn

this is FALSE because ultraviolet light is responsible for sunburn

What type of wave has a wavelength

transverse and longitudinal

Diffuse reflection occurs when light is reflected in many directions from a rough surface

true

Ultraviolet light can cause cataracts

true

the distance ligt travels in one year is called a light year

true

The diagram below represents a concave mirror with an object located between the focal point, F and the surface of the mirror. What type of image is produced when the object is in this position?

upright, enlarged , and virtual

Which of the following colors of visible light carries the most energy

violet

when red,green,and blue light is combined it creates

white light

the three primary colors of pigment color subtraction are

yellow,cyan,and magenta


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