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spherical mirrors Flashcards

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1
Q

two types of spherical mirrors

A

Concave and Convex

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2
Q

center of the sphere from where the mirror was taken

A

center of curvature (C)

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3
Q

center of the mirror

sometimes called the pole of the mirror

A

Vertex (V)

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4
Q

radius of the sphere

distance between C and V

A

radius of curvature (R)

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5
Q

straight line joining C and V

A

principal axis/ optical axis

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6
Q

refers to the width of the mirror

A

Aperture (AB)

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7
Q

the point where the refleced rays meet as in the case of a converging mirror (Concave Mirror) or the point where the reted rays seems to come from behind a diverging mirror (Convex Mirror)

A

Principal Focus (F)

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8
Q

distance from the pole to the principal focus

midway between C and V, _______ is one half of the radius of curvature

A

Focal length (f)

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9
Q

Parallel rays strike a concave mirror, the rays will be reflected and meet at a single point- principal focus

A

concave mirror converging

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10
Q

when parallel rays strike it, the reflected rays spread out and never come to a focus

A

convex mirror is diverging mirror

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11
Q

reflected rays extended in a convex mirror they would appear or seem to come from a single point behind the mirror

A

principal focus of the convex mirror

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12
Q

principal focus in concave mirrors

A

Real

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13
Q

principal focus of convex mirror

A

virtual

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14
Q

T or F

A concave mirror is a CONVERGING mirror. A convex mirror is a DIVERGING mirror.

A

T

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15
Q

T or F

Image formed by a convex mirror is never real because the reflected rays spread out from the mirror

A

T

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16
Q

Virtual
Upright
Smaller than the Object

A

Inage formed by convex mirror

17
Q

T or F

A concave mirror can produce real or virtual images depending on the distance between the mirror and the object.

A

T

18
Q 
location of object:
very far (at infinity)

Location of Image:
At F

A

real, inverted, very small ( almost a point)

19
Q

Location of object:
Beyond C

location of image:
Between C and F

A

real, inverted, smaller than the object

20
Q

Location of object:
At C

Location of image:
At C

A

real, inverted, same size as the object

21
Q

Location of object:
Between C and F

Location of image:
Beyond C

A

real, inverted, bigger than the object

22
Q

Location of object:
At F

Location of Image:
At Infinity

A

no image formed because all reflected rays are parallel

23
Q

Location of object:
between F and V

Location of Image:
Back of mirror

A

virtual, upright, bigger than the object

24
Q

T or F

Virtual images formed by convex mirrors are smaller than the object

A

T

25
Q

T or F

Virtual images formed by plane mirrors are the same size as the object

A

T

26
Q

T or F

Concave mirrors are bigger than the object

A

T

27
Q

1) A ray passing through the center of curvature is reflected along itself.
2) A ray parallel to the optical axis is relfected thorugh the principal focus as in cass of concerging mirrors or when extended it appears to come from principal focus as in case of diverging mirrors. Broken lines are used to indicate an extended ray.
3) A ray passing through the focus (or which when extended passes through the focus) is reflected parallel to the optical axis.
4) A ray striking the vertex of the mirror is reflected at an equal angle on the opposite side of the principal axis

A

Memorize gags

28
Q

f= focal length
R=radius of curvature
do=object distance from the vertex of the mirror
di=image distance from the vertex of the mirror

A

memorize

29
Q

Focal Length:

Positive ?
Negative ?

A

1) concave mirror

2) convex mirror

30
Q

di:
Positive: ?
Negative ?

A

Real

Virtual

31
Q

do:

always ?

A

positive

32
Q

position of the lens equation?

A

mirror/lens equation

33
Q

mirror/lens equation

A

1/do + 1/di =1/f = 2/R

34
Q

calculate orientation and size of the image

A

Magnification Equation

35
Q

Magnification Equation:

Positive: ?
Negative: ?

A

Upright

Inverted

36
Q

Magnification Equation:

Greater than 1: ?
Less than 1: ?
Equal to 1: ?

A

Enlarged
Reduced
Same Size

37
Q

Magnification Equation

A

M= |(-) di/do|

38
Q

cut out of a spherical reflecting surface

A

spherical mirrors

39
Q

a ray coming on to the mirror parallel to the axis

A

Paraxial Ray

science (4 decks)

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