Formulas (Unit 2) Flashcards
1
Q
Velocity of a Wave
A
v = fλ
2
Q
Snell’s Law
A
n = sin i ÷ sin r
n = speed of light in vacuum ÷ speed of light in medium
3
Q
Critical Angle
A
sin C = 1 ÷ n
4
Q
Lens Equation
A
1/u + 1/v = 1/f
5
Q
Magnification
A
m = v / u
m = hi / ho
6
Q
Power of a lens
A
P = 1 ÷ f
7
Q
Double slit experiment
A
λ = ay ÷ d
8
Q
Photo electric emmision
A
E = hf
E = hc ÷ λ
9
Q
Electron Diffraction
A
λ = h ÷ p
10
Q
Classic Doppler Effect
A
f = (v in medium ÷ (v in medium + v of source)) × fₒ
λ = (1 + (v of source ÷ v in medium)) × λₒ
11
Q
Cosmological Doppler Effect
A
z = ∆λ ÷ λ
z = ∆f ÷ f
z = v ÷ c
12
Q
Hubble’s law
A
v = Hₒd
13
Q
Age of the Universe
A
T = 1 ÷ Hₒ
