Question

A glass rod rubbed with silk is used to charge a gold leaf
electroscope and the leaves are observed to diverge. The
electroscope thus charged is exposed to X-rays for a short
period. Then
(a) the divergence of leaves will not be affected
(b) the leaves will diverge further
(c) the leaves will collapse
(d) the leaves will melt

Answer 1

The answer is :-

(b)the leaves will diverge further

Since, the charge of glass rod is positive. So charge on gold leaves will also be positive. Due to X-rays more electrons from leaves will be emitted, so leaves becomes more positive and diverge further.