How many lines of symmetry does the above figure have ?

Options

A. In Fig. (iv) is the largest
B. In Fig. (iii)is the least
C. Fig. (ii) is same as Fig. (iii) but is smaller than Fig. (iv)
D. Is the same for all the figures

Answer

D

Explanation

Gauss law of electrostatics state that the total of the electric flux out of a closed surface is equal to the charge enclosed decided by the permittivity i.e.,
Q electric `=q/(epsilon_0)`
Thus, electric flux through a surface doesn’t depend on the shape, size or area of a surface but it depends on the number of charges enclosed by the surface.
So, in this question, all the figures have same electric flux as all of them have single positive charge.