If a body is charged by rubbing it. Its weight
always decreases slightly
always increases slightly
may increase slightly or may decrease slightly
remains precisely the same
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
What is quantization of charge ? What is the reason of quantization ?
Why can we say that charge of any body is always an integral multiple of $'e'$ ?
Give difference between charge and mass.
By which instrument, the charge on object can be detected ?