JEE Advanced 2015 Paper 1

An infinity long uniform line charge distribution of charge per unit length λ lies parallel to the y-axis in the y−z plane at z=

√3

2

a (see figure).If the magnitude of the flux of the electric field through the rectangular surface ABCD lying in the x−y plane with its center at the origin is

λL

nε0

(ε0=permittivity of free space).then the value of n is