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Science gr 10 > Optics > Flashcards

Optics Flashcards

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1
Q

Define incandescent light

A

Light of the result of a high temperature such as a candle

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2
Q

Electric discharge

A

Produced by an electric current running through gas, such as neon light or lightning

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3
Q

Define phosphorescence

A

Phosphorus absorbs UV light and emits it in the dark

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4
Q

Define Florescence

A

Absorbs UV light and immediately releases it as visible light

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5
Q

Define chemiluminescence

A

Light as a product of a chemical reaction, ex glow sticks

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6
Q

Define bioluminescence

A

Chemical reactions producing light within a living organism

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7
Q

Define triboluminescence

A

Light be crystals (scratching, crushed, rubbed)

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8
Q

State the laws of reflection

A

The angle of incidence equals the angle of reflection

The incident ray, reflected ray, and normal all lie on the same plane

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9
Q

Regular reflection occurs on what surface?

A

Smooth

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10
Q

Diffuse reflection occurs on what surface?

A

Rough

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11
Q

What way does light always travel?

A

Straight

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12
Q

In a plane mirror, distance between the real and virtual object is?

A

The same

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13
Q

In a plane mirror, the reflected object is? (salt)

A

Same size
Upright
Behind mirror
Virtual

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14
Q

What shape is a concave mirror?

A

Inside edge faces object

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15
Q

What are the four rules for concave mirrors?

A
  1. A ray traveling through the focal point will reflect parallel to the principal axis
  2. A ray traveling parallel to the principal axis will reflect through the focal point
  3. A ray traveling through c will reflect upon itself
  4. A ray traveling through the vertex follows the laws of reflection (iangle = rangle)
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16
Q

To locate c, double

A

F

17
Q

To locate F, divide _ in two

A

C

18
Q

In a concave mirror, describe salt for an object beyond c

A

Smaller
Inverted
Between f and c
Real

19
Q

In a concave mirror, an object at c is?

A

Same
Inverted
At c
Real

20
Q

What is another name for a concave mirror?

A

Converging

21
Q

In a concave mirror, how will an object appear if it is between C and F

A

Larger
Inverted
Beyond c
Real

22
Q

Past F, in a concave mirror, the object become

A

Virtual

23
Q

In a concave mirror, as the object moves ______ the image moves _______

A

Closer, Further

24
Q

In convex mirrors, the c and f are on which side?

A

The far side of the mirror

25
Q

In a convex mirror, is the F positive or negative

A

Negative

26
Q

Light rays in a convex mirror always what

A

Diverge

27
Q

The formed image in a convex mirror is always

A

Virtual

28
Q

In a convex mirror, a ray traveling parallel to the principal axis will

A

Reflect through F as an extension of the reflected ray

29
Q

What changes as light moves from what medium to another?

A

Its speed

30
Q

How does light bend when travelling from a fast to slow medium?

A

Towards the normal

31
Q

How does light bend when travelling from a slow to fast medium?

A

Away from the middle line (normal)

32
Q

N is for

A

index of refraction

33
Q

C is for

A

speed of light in a vacuum (3 x 10 to the power of 8 m/s)

34
Q

V is for

A

Speed of light in given medium

Science gr 10 (2 decks)

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