Q. When electron is brought from infinity to radius r its energy

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Q. New element formed by reaction of alpha particles with Beryllium is

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Q. Pressure range which is applied in discharge tube is

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Q. Window through which X Rays move in experiment is made up of

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Q. Quantum numbers are used to describe

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Q. Element volatilized for continuous spectrum effect the

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Q. In formula 2n2 principle quantum number cannot have value of

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Q. 1 Cycle per second is equal to

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Q. Voltage which is applied in discharge tube is dependent upon

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Q. Measurement of e/m was possible because of instrument made by

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Q. Accelerated electrons like waves performed

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Q. Planck proposed that energy travels in

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Q. Magnetic properties of cathode rays were discovered in year

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Q. To explain origin of spectral lines

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Q. Value of 'm' depends upon values of

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Q. Distance between two adjacent crests or troughs is called

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Q. Balmer series were discovered in

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Q. Aluminium foil causes cathode rays to

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Q. Continuous spectrum is characteristic of matter which is present in

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Q. Mass of proton in amu is

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