From the following masses, the one which is expressed nearest to the milligram is
The nucleus of helium contains
The proton and neutron are collectively called as
One would expect proton to have very large
Which of the following statement is true
Magnitude of K.E. in an orbit is caused by
The density of a neclear of an atom is
The average distance of an electron in an atom from its nucleus is of the order of
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.
Assertion : Cathode rays do not travel in straight lines.
Reason : Cathode rays penetrate through thick sheets.
Ratio of masses of proton and electron is
Penetration power of proton is
Splitting of signals is caused by
The Heaviest particle is
Which phrase would be incorrect to us
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
Rutherford experiment prove
The minimum real charge on any particle which can exist is
Cathode rays have
The nature of anode rays depends upon
Anode rays were discovered by
Which one of the following pairs is not correctly matched
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