Prisms Flashcards
1
Q
Prism?
A
Two flat polished refracting surfaces inclined at an angle relative to each other
Prisms have an apex, apex angle, base
2
Q
What does dispersion mean?
A
When a beam of light passes through a prism it splits into a spectrum of colours
3
Q
Why is blue light refracted more than red light?
A
Blue is shorter in wavelength
4
Q
Dispersion can not occur for what light?
A
Monochromatic light
5
Q
Where does the light move towards?
A
The base
6
Q
Where does the image move towards
A
The apex
7
Q
What is the angle of deviation dependant on
A
-refractive index of prism
-angle of incidence
-apex angle
8
Q
What is the angle of deviation
A
The light ray is deviated towards the base of the prism, this net change in direction is called the angle of deviation
