Anode rays were discovered by
Anode rays were discovered by
The correct option is B Goldstein
Explanation of correct option:
With the discovery of electrons, scientists started looking for positively charged particles .which were naturally expected because matter is electrically neutral under ordinary conditions. The first experiment that led to the discovery of the positive particle was conducted by Goldstein in 1886. He used a perforated cathode in the modified cathode ray tube.
Explanation of Incorrect option:
Option (D): The nature and existence of electrons were established by experiments on the conduction of electricity through gases. these investigations were made by W. Crookes, J. Perrin, J.J. Thomson, and others. J. J. Thomson determined the charge/mass value of the electron by studying the deflections of cathode rays in electric and magnetic fields.
Option(A): Moseley (1912-1913), investigated the X-ray spectra of 38 different elements, starting from aluminum and ending in gold.
Option(C): On the basis of alpha particle scattering experiments, Rutherford proposed a model of the atom which is known as the nuclear atomic model.
Hence, Option(B) is the correct option.
Goldstein
Explanation of correct option:
With the discovery of electrons, scientists started looking for positively charged particles .which were naturally expected because matter is electrically neutral under ordinary conditions. The first experiment that led to the discovery of the positive particle was conducted by Goldstein in 1886. He used a perforated cathode in the modified cathode ray tube.
Explanation of Incorrect option:
Option (D): The nature and existence of electrons were established by experiments on the conduction of electricity through gases. these investigations were made by W. Crookes, J. Perrin, J.J. Thomson, and others. J. J. Thomson determined the charge/mass value of the electron by studying the deflections of cathode rays in electric and magnetic fields.
Option(A): Moseley (1912-1913), investigated the X-ray spectra of 38 different elements, starting from aluminum and ending in gold.
Option(C): On the basis of alpha particle scattering experiments, Rutherford proposed a model of the atom which is known as the nuclear atomic model.
Hence, Option(B) is the correct option.
