Q. They produce flashes on ZnS plate

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Q. The first theory of atom was proposed by

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Q. The e/m values for the positive rays is highest for

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Q. Electrons can revolve only in those orbits having fixed

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Q. The velocity of photon is

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Q. The first orbit of hydrogen has a radius of

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Q. Fast-moving electrons have energy

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Q. Neutron was discovered by

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Q. Balmer series lies in the region of

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Q. Uncertainty principle can be best understood by

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Q. Rutherford discovered

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Q. In the absence of magnetic field all energy levels have

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Q. In the ground state of an atom, the electron is present

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Q. The canal Rays were proposed by

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Q. Stoney proposed the name of

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Q. The radius of moving electron is inversely proportional to square of

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Q. All are electromagnetic radiations except

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Q. This property of electron was determined by Thomson

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Q. The mass of neutron is equal to the mass of

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Q. Splitting of spectral lines when atoms are subjected to electric field is

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