Question

A ball of mass m = 0.05 kg is suspended by a thread and a charge a = 1μc is supplied when a ball with diameter 5 cm and a like charge of same magnitude is brought close to the first ball, but below it the tension decreases to 1/5 of its initial value. The distance between centres of the balls is​

Answer 1

Answer:

$0.52 \times 10 - {}^{2}$