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MHT CET Physics question

PhysicsElectric Charges and FieldsMHT CET

A cylinder of radius 4 mm and surface density of charge is surrounded by a medium of dielectric constant 6.28. The magnitude of electric field at a point 2 m away from the axis of the cylinder is

Answer: (A)

Solution

\dfrac{σ a}{ε_0kr}\dfracExtra open brace or missing close brace{0.25×10^{-6}10^{-3}10^9$

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Question ID VK-075694