Cheatography

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

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