Unit 1 : Formulas Flashcards
1
Q
What is the formula for Wave Theory of Light
What units are they measured in?
A
Frequency = Speed / Wavelength
Wavelength in nm
Frequency (f) in m/s or Hz
Speed of light (v) = 3 x 10^8 m/s
2
Q
What is formula for Prism?
What units are they measured in?
A
P = C / D P = Prism Power (PD) C = Displacement (cm) D = Distance from the prism (m)
3
Q
What is the formula for Vergence of Light?
What units are they measured in?
A
P = 1 / f P = vergence power (diopters) F = distance (m) from the point of focus
4
Q
What is the formula for distance of the OBJECT from the lens?
What units are they measured in?
A
U = 1 / u U = vergence of the object rays (D) u = distance of the object from the lens (m)
5
Q
What is the formula for distance of the IMAGE from the lens?
What units are the measured in?
A
V = 1 / v V = vergence of the image rays (D) v = distance of the image from the lens (m)
6
Q
If the question asks for power of a lens / focal length, what formula do you use?
A
P = 1 / f
