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Q.

A point charge causes an electric flux of 2×104 Nm2C1to pass through a spherical Gaussian surface of 8.0 cm radius, centred on the charge. The value of the point charge is :
(Givenϵ0=8.85×1012C2N1m2)

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a

17.7×108C

b

15.7×108C

c

15.7×108C

d

17.7×108C

answer is A.

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Detailed Solution

 ϕ=2×104Nm2C r=8.0cm ϕ=qϵ0q=ϵ0ϕ =(8.85×1012)×(2×104) q=17.7×108C

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