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Optics > Spherical Mirrors > Flashcards

Spherical Mirrors Flashcards

1
Q

(

A

Convex mirror

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2
Q

)

A

Concave mirror

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3
Q

Convex mirrors

A

Diverge light rays

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4
Q

Concave mirrors

A

Converge light rays

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5
Q

What is a centre of curvature?

A

The centre of the “sphere”

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6
Q

What is the pole?

A

Where the principal axis intersects the mirror

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7
Q

What is the focal point?

A

The point halfway between the centre of curvature and the pole

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8
Q

What is the focal length?

A

The distance between the pole and focal point (f)

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9
Q

What is the object distance?

A

The distance between the object and mirror (u)

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10
Q

What is the image distance?

A

The distance between the image and the mirror (v)

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11
Q

If an incoming ray hits the pole…

A

…it will reflect at angle r equal to angle i

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12
Q

If a ray passes through the focal point…

A

…it will reflect back parallel

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13
Q

If a ray comes in parallel…

A

…it will reflect back through the focal point

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14
Q

If a ray comes into the centre of curvature…

A

…it will reflect back along its original path

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15
Q

An object outside the centre of curvature is…

A

Real, inverted and diminished

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16
Q

An object at the centre of curvature is…

A

Real, inverted and same size

17
Q

An object between the centre of curvature and focal point is…

A

Real, inverted and magnified

18
Q

An object at the focal point is…

A

At infinity, there is no image

19
Q

An object between the focal point and pole is…

A

Virtual, upright and magnified

20
Q

Name some uses of concave mirrors.

A

Vanity, shaving and dental mirrors, floodlights, searchlights and projectors

21
Q

All images in a convex mirror are…

A

Virtual, upright and diminished

22
Q

Name some uses of a convex mirror.

A

Wing mirrors on cars, mirrors on concealed junctions and shop aisles

Optics (4 decks)

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