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JEE Advanced 2020 Concept Recapitulation Test 3 Paper 2

Paragraph for Question Nos. 15 and 16
A positive point charge having charge Q is placed at a distance a∕2 from centre of an unchanged spherical conductor of inner radius a and outer radius '2a'. Another positive point charge having charge "Q' is placed at a distance 4a from centre of a conducting sphere. Then

Question : 15

Total: 54

Which of the following is incorrect?

The Surface charge density on inner and outer surface of sphere would be non uniform
The Electrostatic potential on outer surface of conductor is ‌
3KQ
2a
Electric potential at centre of sphere is ‌
7KQ
4a
Electric field inside cavity is non-uniform.

Validate

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