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1. Electric Charges and Fields
normal
A linear charge having linear charge density $\lambda$, penetrates a cube diagonally and then it penetrate a sphere diametrically as shown. What will be the ratio of flux coming cut of cube and sphere

A
$\frac{1}{2}$
B
$\frac{2}{{\sqrt 3 }}$
C
$\frac{{\sqrt 3 }}{2}$
D
$\frac{1}{1}$
Solution
$\because$ $\phi = \frac{{{{\rm{q}}_{{\rm{inside }}}}}}{{{ \in _0}}}:\frac{{{\phi _1}}}{{{\phi _2}}} = \frac{{\sqrt 3 {\lambda _{\rm{a}}}}}{{2{\lambda _{\rm{a}}}}} = \frac{{\sqrt 3 }}{2}$
Standard 12
Physics