1.3 Refractive Index Flashcards Preview

GCSE Physics 3.1 Medical Applications of Physics > 1.3 Refractive Index > Flashcards

Flashcards in 1.3 Refractive Index Deck (10)
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1
Q

Why does refraction take place?

A

Because waves change speed when they cross from a boundary, which causes a change in direction

2
Q

What is the exception for refraction?

A

The waves are travelling along the normal

3
Q

What is the normal?

A

The non existent line perpendicular to the length of the material where the waves are entering

4
Q

Where does the light wave refract if the change in density was from less to more dense?

A

Directed towards the normal

5
Q

Where does the light wave refract if the change in density is from more to less dense?

A

Directed away from the normal

6
Q

What is the refractive index of a substance?

A

The measure of how much a substance can refract a light Ray

7
Q

What is the equation for the refractive index?

A

Snells law/Refractive Index: sinI/sinR

Where I is the angle of incidence
And R is the angle of refraction

8
Q

Where is the angle of incidence?

A

Where the light enters the new substance

9
Q

What is the angle of refraction?

A

Where the light waves are refracted in the substance

10
Q

What is refraction?

A

The change of direction of light as it passes from one transparent substance into another