Questions in Dual Nature of Radiation and Matter

Select	Question
	Which is not true with respect to the cathode rays
	In Milikan’s experiment, an oil drop having charge q gets stationary on applying a potential difference V in between two plates separated by a distance ‘d’. The weight of the drop is
	Electron volt is a unit of
	In Thomson experiment of finding $e/m$ for electrons, beam of electron is replaced by that of muons (particle with same charge as of electrons but mass 208 times that of electrons). No deflection condition in this case 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
	The speed of an electron having a wavelength of ${10^{ - 10}}\,m$ is
	Which of the following is not the property of a cathode ray
	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 $3.6 \times {10^4}V{m^{ - 1}}$ and $1.2 \times {10^{ - 3}}T$ respectively and go through undeflected. The measured value of $e/m$ of the electron is equal to
	The ratio of specific charge of an $\alpha $-particle to that of a proton is