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Physics S2 > Light > Flashcards

Light Flashcards

1
Q

Light travels in …

A

straight lines

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2
Q

Light is an …

A

Electromagnetic wave

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3
Q

Shadows from when …

A

light cannot reach an area

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4
Q

Always draw arrows on …

A

the light rays

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5
Q

Always draw a dotted …

A

Normal line

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6
Q

Use a …

A

Ruler

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7
Q

The normal line is always …

A

90 degrees from surface

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8
Q

Occurs when light travels through an object

A

Refraction

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9
Q

When light goes in to another medium it changes direction …

A

Closer to the normal

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10
Q

Occurs when light bounces off an object

A

Reflection

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11
Q

Law of reflection

A

Angle of incidence = Angle of reflection

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12
Q

What mirror? Angles viewing angle. Objects appear smaller

A

Convex mirror

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13
Q

What mirror? Objects upside down if far away. Objects appear larger if close to mirror.

A

Concave Mirror

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14
Q

What lense is this? Converges to light. Objects far away are upside down. Objects close up are magnified

A

Convex lense

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15
Q

What lense is this? Diverges the light. Widens field of vision. Objects seem smaller.

A

Concave lenses

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16
Q

Name the three primary colours

A

Red blue green

17
Q

Mix two of the primary colours and get …

A

Magenta Cyan Yellow

18
Q

Mix all three primary colours to get …

A

White

19
Q

When light hits an object all colour other than the one we see is

A

absorbed

20
Q

Describe dispersion

A

Dispersion is when you shine white light at certain angles and you can split it into all of its parts. For this we use a prism.

Physics S2 (1 decks)

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