Topic 15 Flashcards
1
Q
What is the ray tracing method?
A
Use of three rays from an object that are easily predictable.
2
Q
What are the three rays used in Ray tracing?
A
Parallel with the axis to the lens, passing through the focus
Through the centre of the lens, not changing direction
Through negative focus, travelling parallel with the axis upon hitting the focus.
3
Q
Give the Thin Lens equation
A
- s = Object distance*
- sā = Image distance*
- f = Focal distance*
4
Q
Equation to calculate the Power of a lens
A
