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A-Level Physics AS2 Formula Sheet Cheat Sheet (DRAFT) by

A collection of the most valuable formula for CCEA Physics AS2

This is a draft cheat sheet. It is a work in progress and is not finished yet.

2.1 Waves

f = T-1
Frequency = Period Time of Wave -1
v=fλ
Velocity = Frequency x Wavelength

2.2 Refraction

n = (sin i)÷(sin r)
Refractive Index = (sin [Incident Ray])÷(sin [Refracted Ray])
n =(c
1
)÷(c
2
)
Refractive Index = (Velocity Before Refrac­tio­n)÷­(Ve­locity After Refrac­tion)
sin c = n-1
sin (Critical Angle) = Refractive Index -1

Lenses

f-1=u-1+v-1
(Focal Length)-1 = (Object Distance)-1+(Image Distance)-1
f-1=P**
(Focal Length)-1 = Power of Lens
m= (h
i
)÷(h
o
)
Magnif­ication = (Height of Image)­÷(H­eight of Object
m= (v)÷(u)
Magnif­ication = (Image Distan­ce)­÷(O­bject Distance)

2.4 Superp­osi­tion, Interf­erence and Diffra­ction

λ=(ay)÷d
Wavelength = Slit Separation x Fringe Separation ÷ Distance to Screen
dsinϑ=nλ
(Slit Spacing)sin(Angle From Centre) = (Order of Maxima) x Wavelength