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C 1 and C 2 are two hollow concentric cubes enclosing charges 2Q and 3Q respectively as shown in figure. The ratio of electric flux passing through C 1 and C 2 is : 3Q 2Q

1. 2 : 3
2. 5 : 2
3. 2 : 5
4. 3 : 2

Correct answer: 2 : 5

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