The electron of a hydrogen atom revolve round the proton in a circular
The colour of the positive column in a gas discharge tube depends on
A charged oil drop of mass
In the phenomenon of electron discharge through gases at low pressure, the coloured glow in the tube appears as a result of
Vidicon works on the principle of
The specific charge of an electron is
An oil drop carrying a charge q has a mass m kg
millikans oil-drop experiment established that
The charge on electron was discovered by
A cathode emits
Positive rays are very identical to
If gE and gM are the eccelerations due to gravity on the surface of the earth and the moon respectively
Electron volt is a unit of
One moving electron when comes closer to other stationary electron
a beam of cathode rays is subjected to crossed Electric (E) and Magnetic field (B)
Positive rays consists of
When cathode-rays strike a metal target of high melting point with a very high velocity, then which of the following are produced
Which of the following law is used in the Millikans method for the determination of charge
In A discharge tube ionization of enclosed gas is
O++, C+ , He++ and H+ ions are projected on the photographic plate with same velocity in a mass spectrograph. Which one will strik..
The value +1/2 and -1/2 of spin quantum number show
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