The ratio of specific charge of a proton and an Î± - particle is
From the following masses, the one which is expressed nearest to the milligram is
Which of the following statement is true
The average distance of an electron in an atom from its nucleus is of the order of
Magnitude of K.E. in an orbit is caused by
The density of a neclear of an atom is
Which is correct statement about proton
Number of neutron in C12 is
Assertion : Cathode rays are a stream of Î± -particles.
Reason : They are generated under high pressure and high voltage.
Penetration power of proton is
Assertion : Cathode rays do not travel in straight lines.
Reason : Cathode rays penetrate through thick sheets.
Splitting of signals is caused by
Ratio of masses of proton and electron is
The Heaviest particle is
Who discovered that cathode rays are made up of electrons
What is the ratio of mass of an electron to the mass of a proton
Which phrase would be incorrect to us
Rutherford experiment prove
The nature of anode rays depends upon
The minimum real charge on any particle which can exist is
Cathode rays have
Anode rays were discovered by
Which one of the following pairs is not correctly matched
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