12:["$","span","2",{"dangerouslySetInnerHTML":{"__html":""},"className":"whitespace-pre-wrap"}] 19:T502,

2\pi \epsilon_0 \ln 2

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\pi \epsilon_0 / \ln 2

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Q.A cylindrical capacitor has inner radius a and outer radius 2a. The capacitance per unit length is

Correct Answer: Option A

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