1.

If the magnitude of intensity of electric field at a distance x on axial line and at a distance y on equatorial line on a given dipole are equal, then x : y is

Answer»

`root(3)(2) :1`
`1:2`
`1:sqrt(2)`
`1:1`

SOLUTION :`root(3)(2):1`
`E_(1) = (2krho)/x^(3)(therefore x GT gt a)`
`E_(2) = (kp)/y^(3)` magnitude `(therefore y gt gt a)`
But `E_(1) =E_(2)`
`therefore (2kp)/x^(3) = (kp)/y^(3)`
`therefore 2 = x^(3)/y^(3)`
`therefore 2^(1//3) = x/y`


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