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

Options

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

B

Explanation

Charge on 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.