- An electromagnetic wave can travel through the vacuum of space because...
Your answer:
the electric and magnetic fields are self inducing
energy can travel through anything
there is not such thing as a vacuum
space really contains a material called ether which transmits the wave
- What is the characteristic of a EM photon that indicates the amount of energy carried by the particle?
Your answer:
frequency
intensity
amplitude
voltage
- Which one of the following EM waves will carry the most energy?
Your answer:
infrared light
microwave
ultraviolet light
radio
- What is the frequency of 550 nm light waves?
Your answer:
1.83x10^-15 Hz
0.0054 Hz
5.45x10^14 Hz
5.45x10^5 Hz
- How much energy does a 550 nm photon carry?
Your answer:
5.45x10^14 eV
3.17 eV
3.6x10^-19 eV
2.26 eV
- A monochromatic light beam with a quantum energy value of 3 eV is incident upon a photocell. The work function of the target metal is 1.60 eV. What is the maximum kinetic energy of ejected electrons?
Your answer:
2.4 eV
4.6 eV
4.8 eV
1.4 eV
- Which diagram above represents the reflection of light off a plane surface?
Your answer:
no answer
B
A
C
- Which points in the diagram above can be seen in the mirror at the position of the eye?
Your answer:
C,D,E
A,B,F
A,B,C,D,E,F
A,C,D,E
- Look at the diagram above. The image of object 1 would be located in section....
Your answer:
T
N
R
S
- The image of object 5 in question 9 would be located in section....
Your answer:
T
W
R
S
- The image of object 3 in question 9 would be located in section...
Your answer:
M
P
W
N
- A shaving mirror can produce an image larger than the object if....
Your answer:
it is concave and the object is between F and 2F
it is convex and the object is between F and 2F
it is convex and the object is nearer than F
it is concave and the object is nearer than F
- An object is placed 30.0 cm in front of a concave mirror having a focal length of 10.0 cm. If the magnification is 0.5 where is the location of the image?
Your answer:
15 cm in front
60 cm in front
60 cm behind
15 cm behind
- When a water wave travels from shallow to deep water...
Your answer:
the amplitude reduces
the frequency reduces
the wavelength increases
the speed decreases
- What wavelength of light incident on Acrylic will be refracted at the same angle as 285nm light on Fused Quartz?
Your answer:
500 nm
550 nm
600 nm
400 nm
- A light ray passes from substance "A" into "B" then "C" at boundaries "X" and "Y" as shown in the diagram above. Which substance has the highest index of refraction?
Your answer:
no answer
B
C
A
- From question 16 total internal reflection could occur when a light ray meets the ___ boundary from the ___ side?
Your answer:
Y ; C
no answer
X ; B
X ; A
- Imagine "A", "B","C" represented the substances air, glass, diamond. Which is the most likely match?
Your answer:
A : air; B : glass; C : diamond
A : glass; B : air; C : diamond
A : air; B : diamond; C : glass
A : glass; B : diamond; C : air
- White light passes through a triangular prism as shown above. Which ray most likely represents violet light and which ray traveled the fastest in the prism?
Your answer:
A; C
A; B
B; C
C; A
- The refractive index of diamond is 2.42. If light enters a diamond slab at 23 degrees to the normal what is its angle (relative to the normal) in the diamond?
Your answer:
6.03 degrees
0.95 degrees
0.105 degrees
9.29 degrees
- The diagram above shows a eye with blurred vision. What is the condition of the eye and what type of lens would you use to correct this condition?
Your answer:
farsighted; concave
nearsighted; convex
nearsighted; concave
farsighted; convex
- A person with nearsightedness can often see better underwater (without prescription lenses) because....
Your answer:
the eye lens is naturally too thick for an eye boundary with air and the water-eye boundary allows more refraction.
the eye lens is naturally too thick for an eye boundary with air and the water-eye boundary allows less refraction.
the eye lens is naturally too thin for an eye boundary with air and the water-eye boundary allows more refraction.
the eye lens is naturally too thin for an eye boundary with air and the water-eye boundary allows less refraction.
- For a light ray entering an acrylic rhombus from air, the critical angle after which total internal reflection occurs...
Your answer:
is greater for violet light than red light because its refractive index is greater.
is greater for red light than violet light because its refractive index is smaller.
is greater for violet light than red light because its refractive index is smaller.
is greater for red light than violet light because its refractive index is greater.
- Which is NOT correct when describing the formation of rainbows?
Your answer:
The angle between the incident white light and the returning violet ray is 45 degrees.
A rainbow is really spherical in nature.
Sunlight is spread into a spectrum when it enters a spherical raindrop.
Sunlight is internally reflected on the back side of a raindrop.
- In her bedroom, Mia has a fiber optic light that glows as hundreds of fiber optic cables are lit from below. If each fiber optic cable has an index of refraction of 1.48, at what critical angle must light enter the cable in order for total internal reflection to occur?
Your answer:
21.3 degrees
1.48 degrees
42.5 degrees
0.67 degrees
- Determine the color of the paper for each diagram in the graphic above.
Your answer:
magenta; cyan; yellow
cyan, yellow; magenta
yellow; magenta; cyan
blue; green; red
- White light is shone on two objects A and B (shown above). They will appear...
Your answer:
red; green
cyan, magenta
magenta; cyan
green; red
- The cyan color of ocean water is evidence that the water absorbs......
Your answer:
green
orange
yellow
red
- When blue and yellow paints are mixed together, the result is green. The reason for this is that:
Your answer:
blue reflects only blue light, and yellow reflects almost all colors of light.
blue and yellow are complementary colors.
blue absorbs yellow light and yellow absorbs blue light.
between blue and yellow pigments, all colors are absorbed except green.
- The diagram above shows two speakers which are arranged so that sound waves with the same frequency are produced and radiate through the room. An interference pattern is created (as represented in the diagram below). The thick lines in the diagram represent wave crests and the thin lines represent wave troughs. Which two points are located on the same nodal line?
Your answer:
D and E
C and F
E and A
A and B
- Interference effects observed in the early 1800’s were instrumental in supporting a concept of the existence of which property of light?
Your answer:
polarization
wave nature
particle nature
electromagnetic character
- Straight waves approach a barrier with a gap in it. As the frequency of the waves is increased (the wavelength being smaller than the gap width) the waves.....
Your answer:
are refracted more
are diffracted less
are diffracted more
continue straight on unchanged
- The development of blue lasers is so important because:
Your answer:
blue light is refracted less than red light in different media
blue lasers use less energy than red lasers
blue light is diffracted more than red light around smaller objects
blue light reflected more than red light off smaller objects
- Electrons are used in high resolution microscopes because...
Your answer:
they diffract mostly around around the material being observed
they have a small wavelength compared to the size of the atom
they give out light when they interact with the material being observed
they don't reflect much from the material being observed
- A grating with 400 slits/mm and a grating with 800 slits/mm give the same fringe spacing with two different wavelengths of light. The wavelength of light passing through the 800 slits/mm grating compared to the other wavelength is:
Your answer:
quarter as much
four times as much
half as much
twice as much
- White light is spread out into spectral hues by a diffraction grating. If the grating has 2000 lines/cm, at what angle will red light (wavelength = 640 nm) appear in the first order?
Your answer:
3.57 degrees
7.35 degrees
11.17 degrees
13.35 degrees