List of top Physics Questions on Gauss's Law asked in KCET

Consider three point charges \(-2Q, Q\) and \(-Q\) and three surfaces S\(_1\), S\(_2\) and S\(_3\) as shown in the figure. Match the entries of List-I with that of List-II.

List-I
(a) Net flux through S\(_1\)
(b) Net flux through S\(_2\)
(c) Net flux through S\(_3\)
List-II
(i) \(\frac{-2Q}{\epsilon_0}\)
(ii) \(\frac{-Q}{\epsilon_0}\)
(iii) Zero
Codes:

What will be the total electric flux through the faces of the cube as given in the figure with side of length 'a' if a charge Q is placed at B, midpoint of an edge of the cube (see figure)?

A uniform magnetic field of strength \( B = 2 \, \text{mT} \) exists vertically downwards. These magnetic field lines pass through a closed surface as shown in the figure. The closed surface consists of a hemisphere \( S_1 \), a right circular cone \( S_2 \), and a circular surface \( S_3 \). The magnetic flux through \( S_1 \) and \( S_2 \) are respectively