Two small identical balls carrying  the charges  of the same sign  are  suspended from the
Channel: Doubtnut
Date: 2020-08-16

Two small identical balls carrying  the charges  of the same sign  are  suspended from the same  point by insulating threads of equal  length. When  the surrounding  space was filled with kerosene  the divergence  angle between the threads  remained  constant, What  is the  density  of the material of  which the balls are made ?