Q. Millikan oil drop method was discovered in

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Q. When target element used has more atomic number it produce X rays with

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Q. When electron remains between orbits its momentum is

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Q. Fluorescence produced by cathode rays in alumina is

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Q. Square of atomic number of element emitting radiations effects

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Q. Neutrons which are used for fission purposes are

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Q. According to structure of atom electron should fall in

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Q. E/m value of electrons comes out to be

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Q. Other source of rainbow other than sun is

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Q. Tube to discover electrons is fitted with

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Q. When electron jumps from infinity orbit to n1 in Lyman series line developed is called

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Q. Sub shell which is not sub-divided into any other orbital is termed as

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Q. Neutrons having energy less than 1eV are called

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Q. When electron jumps in n1 orbit series of spectral lines obtained is called

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Q. Radius of hydrogen first orbit is

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Q. Color of spectrum of sodium is

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Q. When alpha particle from nitrogen is ejected atom reduced is

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Q. Upward velocity of electron is directly proportional to

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Q. By magnetic field cathode rays are deflected in

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Q. Cathode rays produce glow on

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