Second Year Physics Atomic Spectra
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Class 9Class 10First YearSecond Year
When an electron in hydrogen atom jumps from higher orbit into fourth orbit. The set of linesemitted is called:A) Balmer seriesB) Lyman seriesC) Bracket seriesD) Paschen series
The penetrating power of X-rays is increased byA) Decreasing their intensityB) Increasing their intensityC) Increasing their velocityD) None of these
In a hydrogen atom the radius of the electron orbit is governed by Bohrs quantum rule which states thaA) the linear momentum of the electron is quantisedB) the angular momentum of the electron is quantisedC) the linear velocity of the electron is quantisedD) the angular velocity of the electron is quantized