Q. To provide low pressure in discharge tube we attach

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Q. When electron changes its orbit from outer to inner energy is

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Q. X Rays are analyzed by crystal of

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Q. Noble prize was awarded to Chadwick in year

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Q. Value of electron permittivity in Columb square per Joule per meter is

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Q. Electrons should be filled in energy sub shells in order of increasing energy values, is principle of

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Q. To discover electrons gas discharge tube is fitted with

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Q. For heavier gases in positive rays production e\m ratio is

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Q. Proton rays were discovered by

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Q. Wavelength of green color is

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Q. Letter 's' for azimuthal quantum number stands for

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Q. Mass of one neutron in kg is

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Q. Orbits in which electrons move according to Bohr are

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Q. Blue color has wavelength between

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Q. Velocity of oil droplet is dependent upon its

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Q. Azimuthal quantum number is represented by

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Q. Absorbed wavelengths in atomic absorption spectrum appear as

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Q. Number of lobes in fifth d-orbital are

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Q. Line spectrum is actually characteristic of

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Q. Proton was a name given by

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