The fundamental particles present in the nucleus of an atom are
Alpha particles and electrons
Neutrons and protons
Neutrons and electrons
Electrons, neutrons and protons
Cathode rays were discovered by
William Crookes
J. Stoney
Rutherford
None of these
Cathode rays are
Protons
Electrons
Neutrons
(-particles
Cathode rays have
Mass only
Charge only
No mass and charge
Mass and charge both
Cathode rays are made up of
Positively charged particles
Negatively charged particles
Neutral particles
None of these
Cathode rays are produced when the pressure in the discharge tube is of the order of
76 cm of Hg
1 cm of Hg
Cathode-ray tube is used in
Compound microscope
A ratio receiver
A television set
A Van de Graff generator
Which of the following statement is not correct regarding cathode rays
Cathode rays originate from the cathode
Charge and mass of the particles constituting cathode rays depends upon the nature of the gas
Charge and mass of the particles present does not depend upon the material of the cathode
The ratio charge/mass of the particles is much greater than that of anode rays
Which one is not true for the cathode rays
They have kinetic energy
They cause certain substances to show fluorescence
They travel in straight line
They are electromagnetic waves
The electron is
(-rays particle
(-ray particle
Hydrogen ion
Positron
The charge on an electron is
Unit negative
All
Mass of an electron is
Which of the following has the same mass as that of an electron
Photon
Neutron
Positron
Proton
Density of the electron is
None of these
A strong argument for the particle nature of cathode rays is that they
Produce fluorescence
Travel through vacuum
Get deflected by electric and magnetic fields
Cast shadow