A total charge of `5 muC` is distributed uniformly on the surface of the thin walled semispherical cup. If the electric field st

A total charge of `5 muC` is distributed uniformly on the surface of the thin walled semispherical cup. If the electric field strength at the centre of the hemisphere is `9xx10^(8) NC^(-1)`, then the radius of the cup is
`(1/(4pi epsi_(0))=9xx10^(9) N-m^(2) C^(-2))`
A. 5 mm
B. 10 mm
C. 5 cm
D. 10 cm

A total charge of `5 muC` is distributed uniformly on the surface of the thin walled semispherical cup. If the electric field strength at the centre o

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