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Physics > Mirrors and lenses > Flashcards

Mirrors and lenses Flashcards

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1
Q

Angle of incidence =

A

Angle of reflection

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2
Q

What is the normal?

A

The line perpendicular to the reflecting surface

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3
Q

The incident ray travels _______ the mirror

A

towards

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4
Q

The reflected ray travels __ from the mirror

A

away

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5
Q

What is it called when light is reflected at the interface?

A

Internal reflection

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6
Q

What is total internal reflection?

A

When no light is refracted at all

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7
Q

What is the critical angle of glass?

A

42

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8
Q

When does total internal reflection occur?

A

When the angle of incidence exceeds the critical angle

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9
Q

What happens when:
angle of incidence < critical angle
angle of incidence = critical angle
angle of incidence > critical angle

A

Most light is refracted
Light refracted at 90
Total internal reflection

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10
Q

The image formed by a plane mirror is…

A

upright
laterally inverted
virtual

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11
Q

The image formed by a convex mirror is…

A

diminished
upright
virtual

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12
Q

The image formed by a concave mirror…

A

depends where the object is in relation to the mirror

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13
Q

Where is a diverging lens thinnest?

A

At its centre

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14
Q

Where is a converging lens thickest?

A

At its centre

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15
Q

If an image is formed in front of the lens, is it real or virtual?

A

Virtual

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16
Q

If an image is formed in front of a mirror, is it real or virtual?

A

Real

17
Q

What image is produced by a diverging lens?

A

Virtual and upright

18
Q

What image is produced by a converging lens?

A

It depends on the object’s distance from the lens

19
Q

Magnification =

A

image height
___________
object height

Physics (7 decks)

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