Chapter 13 Flashcards
1
Q
Refractive index
A
Refractive index = speed of light in a vacuum/speed of light in medium
2
Q
Highest refractive index
A
- slowest speed of light
- greater bending effect
- less angle of refraction
3
Q
Refraction calculations
A
Sin(I) / sin(r) = N(refractive index)
4
Q
Convex len (converging)
A
Thin round the edge
Thickest in the middle
5
Q
Concave lens (diverging)
A
Thick edge
Thin middle
6
Q
Object 2 focal lengths away from lens
A
Makes: real image, diminished and inverted
7
Q
Object between 1 and 2 focal lengths
A
Makes: real image, magnified and inverted
8
Q
Object in between lens and 1 focal point (magnifying glass)
A
Makes: virtual image, upright and magnified
9
Q
Optical fibres
A
Used in medicine
As endoscope is a device used to see inside a patients body
