Physics Yr.7 Flashcards

1
Q

Plane mirror

A

A plane mirror is a mirror that reflects light perfectly

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2
Q

Specular reflection

A

This is when the reflection is perfectly done. e.g. a ray is shone at a plane mirror at 45degrees it will be reflected at 45 degrees.

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3
Q

Diffuse scattering

A

This is when light rays are shone on a normal object, the object will then reflect it all over the place.

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4
Q

Law of reflection

A

The law of reflection is when the incident ray and the reflected ray are at the same angle.

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5
Q

Incident Ray

A

The incident ray is the ray that will be reflected but is shone at the mirror

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6
Q

Reflected Ray

A

The reflected ray the incident ray after it has bounced off the mirror.

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7
Q

Refrection

A

Refraction is when a light ray bends due to the change in medium.e.g. Light is traveling in air but then has to travel through glass.

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8
Q

Angle of refraction

A

The angle of refraction the the angle in between the refracted ray and the normal.

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9
Q

Medium

A

The medium is what light or sound waves travel on, however the light ray doesn’t have to but the sound wave does.

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10
Q

Cornea

A

The cornea is the protective lens that sits in front of the pupil

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11
Q

Lens

A

The lens refracts the light onto the retina which makes an image.

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12
Q

Retina

A

The retina is the back of the eye that makes an image

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