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