Dual Nature of ...

An electron of charge \'e\' coulomb passes through a potential difference of V volts. Its energy in \'joules\' will be

In Millikan\'s oil drop experiment, an oil drop of mass 16 × 10^–6 kg is balanced by an electric field of 10⁶ V/m. The charge in coulomb on the drop, assuming g = 10 m/s² is

Which is not true will respect to the cathode rays?

In Thomsons experiment of finding e/m for electrons, beam of electron is replaced by that of muons (particles with same charge as of electrons but mass 208 times that of electrons). No deflection condition in this case is satisfied if

The colour of the positive column in a gas discharge tube depends on

Cathode rays are produced when the pressure is of the order of

Which of the following have highest specific charge?

In a Thomson set-up for the determination of e/m, electrons accelerated by 2.5 kV enter the region of crossed electric and magnetic fields of strengths 3.6 × 10⁴ Vm^–1 and 1.2 × 10^–3 T respectively and go through undeflected. The measured value of elm of the electron is equal to

The ratio of specific charge of an α-particle to that of a proton is

In an electron gun, the electrons are accelerated by the potential V. If e is the charge and m is the mass of an electron, then the maximum velocity of these electrons will be