Following figure shows for Gaussian surface ${\mathrm{S}}_1, {\mathrm{S}}_2, {\mathrm{S}}_3 \mathrm{and} {\mathrm{S}}_4$

Now, match the following columns and mark the correct code given below.

	Column-I		Column-II
i.	${\mathrm{\varphi }}_{{\mathrm{S}}_1}$	p.	$+\frac{\mathrm{Q}}{{\mathrm{\epsilon }}_0}$
ii.	${\mathrm{\varphi }}_{{\mathrm{S}}_2}$	q.	0
iii.	${\mathrm{\varphi }}_{{\mathrm{S}}_3}$	r.	$-\frac{\mathrm{Q}}{{\mathrm{\epsilon }}_0}$
iv.	${\mathrm{\varphi }}_{{\mathrm{S}}_4}$	s.	$\frac{2\mathrm{Q}}{{\mathrm{\epsilon }}_0}$

Codes: