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Bohr given a model for hydrogen molecule which is also applicable for some lighter atoms in which a one electron revolves around a stationary nucleus of positive charge Ze (known as hydrogen like atom)
Bohr's model is based on the following postulates.
(i) The electron can revolve only in particular discrete non-radiating orbits, named stationary orbits, for which total angular momentum of the revolving electrons is an integral multiple of
Laboratory tweezers Very serviceable tweezers can be made from lengths of flexible strap iron used to place around boxes and creates for shipment. The tweezers shown are abo
Scanning is process of dividing an image on the screen into a large number of very small squares formed by sets of horizontal and vertical straight lines. Iconoscope i
Q. Explain basic working of Interference Filter? An interference filter, which reflects one of more spectral lines and transmits others, while maintaining a nearly zero coeffic
what is semi conductor
A Plane polarized light is incident on a piece of quartz cut parallel to its axis. Evaluate the least thickness for which ordinary ray and extraordinary ray combine
Q. A twelve-slit strobe disc is rotated at the max stopping frequency for a vibrating object. The strobe is rotated at 4.0 Hz. (a) Evaluate the period of the vibrating object?
Q. The half life period of 84Po218 is 3 minutes. What percentage of the sample has decayed in 15 minutes? 1 HLP = 3 minutes In 15 minutes, there are 3 HLPs The remaining
the energy stored in the capacitor decreases with time as the capacitor discharges. After how many time constant is this stored energy one forth its initial value
Q. What are the changes that take place at the superconducting transition temperature? At the transition temperature the subsequent changes are observed (i) The electrical res
what is significance of kirchoff''s law?
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