Qstnid -Ii-6-(30-q2a) Shows An Imaginary Cube Of Edge L/2. A Uniformly Charged Rod Of Length L Moves Towards The Left At A Small But Constant Speed Ν.at T = 0, The Left End Just Touches The Centre Of The Face Of The Cube Opposite It. Which Of The Graphs Shown In The Figure (30-q2b) Represents The Flux Of The Electric Field Through The Cube As The Rod Goes Through It? <Span Style="background-color: #Ffff00;">figure</span></span>figure - 30: Gauss's Law - Neet-xii-physics

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30: Gauss's Law

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#6
(30-Q2a) shows an imaginary cube of edge L/2. A uniformly charged rod of length L moves towards the left at a small but constant speed
ν.At t = 0, the left end just touches the centre of the face of the cube opposite it. Which of the graphs shown in the figure (30-Q2b) represents the flux of the electric field through the cube as the rod goes through it?
FigureFigure
Ans : (d)
At first, when the rod is inserted into the cube, the flux start increasing. When the rod is fully inserted, the flux becomes constant and remains constant for the remaining L/2 length of the rod. After that, as the rod moves out of the cube, the flux starts decreasing. These processes are depicted only by curve (d).
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