Physics Flashcards
Concave mirrors in the shape of a parabola eliminate a problem known as spherical abberation.
True
If the angle of relfection is 55 then the angle of incidence is also 55
True
The angle between the incident ray and the normal ray is called the angle of incidence.
True
Concave mirrors make great security devices in store
False
In convex mirrors, objects appear smaller they are in reality
True
Persistent emission of light following exposure to and removal of a source of radiation.
a) Incandescence
b) Fluorescence
c) Phosphorescence
d) Bioluminescence
e) Chemiluminescence
Phosphorescence
Which colour of light has the shortest wavelegnth.
a) Red
b) Blue
c) Green
d) Violet
Violet
Which of the following statements is correct about an object seen on a plane mirror?
a) It is larger than the object it reflects.
b) It is smaller than the object it reflects.
c) It is the same size as the object it reflects.
d) It is either larger or smaller.
It is the same size as the object it reflects.
Theresa wants to powder her nose. She is confident her mirror is:
a) Concave
b) Convex
c) Plane
d) Compact
Concave
Which best describes the term ray?
a) A light that passes through any substance.
b) A straight line that represents the path of a beam of light.
c) Light that is bent as it passes through a translucent object.
d) An explanation based on observation of how light behave.
A straight line that represents the path of a beam of light.
The image seen in a convex mirror in comparsion with an object is:
a) Smaller and upright
b) Larger and upright
c) Smaller and inverted
d) Larger and inverted
Smaller and upright
The image in a convex mirror is always…
a) Real and inverted
b) Virtual and inverted
c) Real and upright
d) Virtual and upright
Virtual and upright
Objects viewed at the bottom of a swimming pool are deeper than they appear.
True
A rainbow forms when sunlight enters a water droplet and refracts, reflects off the inner surface of the droplet and then refracts again when leaving the droplet.
True
Reflection is the change in direction of a ray of light as it crosses the surface between 2 transparent media.
False
When light passes from air into ethyl alcohol it will refract toward the normal
True
In which of the following substances is the speed of light the smallest?
a) Sodium chloride (n = 1.54)
b) Zircon (n = 1)
c) Lucite (n = 1.51)
d) Ruby (n = 1.54)
Sodium chloride
In which of the following substances is the speed of light the greatest?
a) Diamond (n = 2.42)
b) Zircon (n = 1.92)
c) Lucite (n = 1.51)
d) Flint glass (n = 1.65)
Lucite
The speed of light in glycerol is equal to which of the following?
a) 3.00 x 10^8
b) 2.04 x 10^8
c) 2.46 x 10^8
d) 3.36 x 10^8
2.04 x 10^8
Which of the following optical phenomina is caused by uneven heating of air?
a) Rainbow
b) Mirage
c) Sun dog
d) Apparent depth
Mirage
The speed of light in water is equal to which of the following:
a) 3.00 x 10^8
b) 2.20 x 10^8
c) 2.25 x 10^8
d) 3.36 x 10^8
2.25 x 10^8
The magician entertaining at a childs party claims she can break a pencil in half without physicaly breaking it. When you see her trick, you realize it’s an optical illusion. What is it?
a) Reflection
b) Refraction
c) Luminosity
d) Normal
Refraction
Chromatic abberation is the dispersion of light through the edge of a lens.
True
Hyperopia, also known as far-sightness is the condition in which the eye cannot focus on nearby objects.
True
The cornea is the tissue that forms a transparent, curved structue in the front of the eye that refracts light before it enters the eye.
True
Which of the following is not a characteristic of a converging lens?
a) Thinner in the middle, thicker edges.
b) Causes light to converge
c) Thicker in the middle thinner edges.
d) Forms images upside down
Thinner and thicker
After the lights are shut off and then turned on again, Louis looks in the mirror at his eyes. What is the coloured part of the eye called?
a) Retina
b) Ciliary muscle
c) Pupil
d) Iris
Iris
Collects and focuses light in a refracting telescope:
a) Objective mirror
B) Objective lens
c) Eyepiece lens
Objective lens
