Physics Electric Charges and Fields NEET Previous Year Question MCQ (Single Correct)

If over a surface, then [NEET 2023]

A
the magnitude of electric field on the surface is constant.
B
all the charges must necessarily be inside the surface.
C
the electric field inside the surface is necessarily uniform.
D
the number of flux lines entering the surface must be equal to the number of flux lines leaving it.

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The correct answer is:
D

According to Gauss' law, represents total electric flux passing through a closed surface. If , then it signifies that the number of electric flux lines entering the surface must be equal to the number of flux lines leaving the surface.

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