Construct a cube of length l and see
Naah bro this one's different, in that case the answer would have just been q/6ε0 but the correct choice is C
Construct a cube of length 2l, having the q charge at its centre
It's C only @Rohit_Kulkarni ,
Effective charge= q/8
Flux will be zero for the 3 faces where the charge touches, so flux through one face = 1/3* q/8eo= q/24eo
But will equal number of field lines pass from remaining 3 sides? For cube we could have done that @pratyaksh_tyagi
yeah exactly the remaining sides are not symmetrical
construct a cube of length 2l
then we will have 4 sheets for each side and total 24 sheets would be required.
we need the flux thru one sheet.
(imagine the charge to be at the centre of the cube and construct it)
Yeah but what is with this infinity
Infinity? What do u mean ? Didn't get u.
Have a look at the figure
Had nit seen that in the diagram before
Then take that l --> infinity
Like an inifinite cube but it wud be symmetric all all sides so the answer wud be the same ..imo
4 sides would be symmetric what abt the other two