Physics

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1.
1 point
An object is placed at the focal point of a convergin lens of focal lenghth f. The image distance is at
infinity.
2.
1 point
The focal length of a lens is the same for all colors of light.
3.
1 point
The term dispersion refers to the fact that the inde of refraction of certain materials depends on the
wavelength of light
4.
1 point
The eye does not distinquish real from virtual images
5.
1 point
A telescope consisting of a converging objective lens and a convering eyepiece lens produces a real
image to the eye.
6.
1 point
The critical angle is that angle at which all reflected light is polarized
7.
1 point
The dispersion refers to the fact that the index of refraction of certain materials depends on the
wavelength of light.
8.
1 point
You can calculate the critical angle for a ray of light passing from air into glass.
9.
1 point
For a double slit experiment, if the distance between the slits were increased the angular separation
of the bright fringes would increase.
10.
1 point
When an object is placed 15 cm from a lens, a virtual image is formed. The lens may be concave
or convex.
11.
1 point
For two slits, if the distance between slits were increases, the distance between the bright fringes would
increase.
12.
1 point
Red laser light passes through a single slit to form a diffraction patter. If the width of the slit increases,
the width of the central maximum decreases.
13.
1 point
The critical angle is that angle at which all reflected light is polarized
14.
1 point
A magnifying glass uses a diverging lens to produce an image.
15.
1 point
If the distance between the slits in a Young double slit experiment is increased, the the angular
separation between the dark fringes would decrease
16.
1 point
A converging lens can only produce real images.
17.
1 point
The fact that visible light can be reflected from a surface is convincing evidence that visible
light is a wave.
18.
1 point
The term dispersion refers to the index of refraction of certain materials depends on the angle of
incidence
19.
1 point
For a double slit intereference patter, if the distance between the slits is increased, the separation
between the dark fringes increases also.
20.
1 point
With single slit diffraction, if the slit width is increased, the width of the central maximum is
decreased
21.
1 point
In a diffraction grating, if the distance between the slits is increased, the angular separation
between the dark fringes would decrease.
22.
1 point
A virtual image can be seen by projecting it on a screen
23.
1 point
For a double slit experiment, if the wavelength of light wire increased the angular separationof the
bright fringes would increase.
24.
1 point
When an object is placed 15 cm from a lens a vertual image is formed. The lens must be a
diverging lens.
25.
1 point
Red laser passes through a very narrow single slit to form a diffraction pattern. If the width of the slit
increased by a factor of two, the width of the central maximum is increased by a factor of two also.
26.
1 point
If the distance between the slits in a Young double slit experiment is increased, the distance between
the bright fringes would increase.
27.
1 point
The intereference of electromagnetic waves is convincing evidence that they are transverse waves
rather than longitudinal waves
28.
1 point
A single diverging lens cannot produce a real image.
29.
1 point
A single diverging lens can only produce virtual images
30.
1 point
A magnifying glass produces a virtual image
31.
1 point
White light enters a glass prism but color components of light are observed to emerge from the prism.
White light is separated into its color components by total internal reflection within the prism.
32.
1 point
The bending of light as it passes from one medium to another is due to a sudden change in frequency.
33.
1 point
When an object is placed 25 cm from a lens, a real image is formed. The image distance can be
less than 25 cm.
34.
1 point
Green laster light shines through a diffraction grating and produces bright fringes on a screen. When a
red laser light passes through the grating the bright fringes are closer together.
35.
1 point
A converging lens has a negative focal length.
36.
1 point
A magnifying glass can only produce a virtual image.
37.
1 point
The index of refraction for a given material may be less than one.
38.
1 point
A virtual image can be seen but must project on a screen
39.
1 point
A magnifying lens when used properly yields a real, upright, enlarged image.
40.
1 point
Ray diagrams can only be used to find real images
41.
1 point
When an object is placed 25cm from a lens, a real image is formed. The image may be reduced or
enlarged.
42.
1 point
Diffraction of light is important only for aperatures, openings, etc...that are very small compared to
the wavelenghts of light proceeding through them.
43.
1 point
The term coherence refers to the polarization state of two waves
44.
1 point
When an object is placed 15cm from a lens, a virtual image is formed. If the image is upright, the lens
must be a diverging lens.
45.
1 point
For a magnifying glass the image distance will be less than the object distance
46.
1 point
When an object is placed 20 cm rom a lens, a virtual image is formed. The lens must be
diverging.
47.
1 point
When an object is placed 25 cm from a lens, a real image is formed. The lens must be
converging
48.
1 point
Blue light passing through a double slit produces bright fringes on a viewing screen. If red light now
passes through the slits, the angular separation between bright fringes would decrease.
49.
1 point
A near sighted person needs a diverging lens to correct her vision.
50.
1 point
When an object is placed 25cm from a lens, a real image is formed. The image distance can be less
than 25 cm