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Unformatted text preview: Formula Sheet - Physics 317L - Test1 Lenses and Mirrors: reﬂection angle: Θ1 = Θ2 refraction angles: n1 sinΘ1 = n2 sinΘ2 , n = index of refraction total internal reﬂection: critical angel: Θc = sin−1 ( n2 ) n1 plane mirror: distance : i = -p 1 spherical mirror focal length : f = 2 r , (r= radius) 1 1 spherical mirror : f = p + 1 i magniﬁcation: |m|= h h i magniﬁcation: |m|= - p refraction on curved surface: n1 + ni2 = p 1 1 1 thin lenses: f = p + i 1 thin lenses in air: f = (n − 1)( r11 − r12 ) 1 adding 2 lenses: f1+2 = f11 + f12 n2 −n1 r magniﬁcation of 2 lenses: M = m1 m2 angular magniﬁcation: mΘ = Θ Θ cm simple magniﬁcation for Eyepiece lens: mΘ ∼ 25f magniﬁcation of Objective lens: m = - fs , s = microscope length ob Interference and Diﬀraction: λ wavelength in medium : λn = n interference at two slits : d sinΘ = mλ ; m = 0, 1, 2, ...(maxima - bright fringe) 1 interference at two slits : d sinΘ = (m + 2 )λ ; m = 0, 1, 2, ...(minima - dark fringe) 1λ thin-ﬁlm interference: 2L = (m + 2 ) n2 ; m = 0, 1, 2, ...(maxima - bright fringe) λ thin-ﬁlm interference: 2L = m n2 ; m = 0, 1, 2, ...(minima - dark fringe) interference single slit: a sinΘ = mλ ; m = 1, 2, ... (minima) Electric Charge: 1 electrical force: F = 4π 0 |q1r||2q2 | permittivity constant : 0 = 8.85 × 10−12 C 2 /N m2 1 coulomb constant : k = 4π 0 = 8.99 × 109 N m2 /C 2 elementary charge: e ∼ 1.602 × 10−19 C Electric Field: electric ﬁeld : E = F q0 1 |q | 4π 0 r 2 electric ﬁeld by point charge q: E = ...
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This note was uploaded on 09/29/2009 for the course PHY 317L taught by Professor Ritchie/lang during the Spring '08 term at University of Texas at Austin.
- Spring '08