Dual Nature of ...

The mass of a particle is 400 times than that an electron and the charge is double. The particle is accelerated by5 V. Initially the particle remained in rest, then its final kinetic energy will be

When cathode-rays strike a metal target of high melting point with a very high velocity, then which of the following are produced?

While doing his experiment, Millikan one day observed the following charges on a single drop
(i) 6.563 x 10^–19 C
(ii) 8.204 x 10^–19 C
(iii) 11.50 x 10^–19 C
(iv) 13.13 x 10^–19C
(v) 16.48 x 10^–19 C
(vi) 18.09 x 10^–19 C
From this data the value of the elementary charge (e) was found to be

Vidicon works on the principle of

When the speed of electrons increase, then the value of its specific charge

In an electron gun the control grid is given a negative potential relative to cathode in order to

The ratio of momenta of an electron and an a-particle which are accelerated from rest by a potential difference of 100 V is

When subjected to a transverse electric field, cathode rays move

The fact that electric charges are integral multiples of the fundamental electronic charge was proved experimentally by