Find the focal length of the glass lens in FIGURE EX34.27
iClicker What is an electric flux through spheres of radii r1 and r2 e e A :Φ 1 − , Φ2= 0 0 e B :Φ = − e , Φ =0 1 0 2 r2 -e e C :Φ 10 , Φ = 2 r1 0 e D :Φ 10 , Φ = 2 0 E :Φ = e , Φ = − e 1 0 2 0 1 iClicker What is an electric flux through spheres of radii r1 and r2 e e A :Φ 1 − , Φ2= 0 0 e B :Φ = − e , Φ =0 1 0 2