The first emission line in the atomic spectrum in the Ballmer series appears at:
A 200g rickets ball is thrown with a speed of 3 cm/sec. what will be its de Broglie Wavelength
If the X-rays tulie is working at 20kv. Then the minimum wavelentgth of X – rays will be.
An X – rays tulie is operating at 15kv. The lower limit of the wavelength of X – rays produced is:
The lattice constant of a crystal is 2. the manimum wavelength of X – rays which can ba analysed by this arystal will be.
The frequency of the line k line of the characteristtis X – rays spectrum is proportional to.
50% of X – rays oltained from a Coolidge tukie pass through 0.3mm thick alminium fail. If the P.D. letueen thew target and the cathode is increased.then the fractuion of X – rays passing from fail will be.
The threshold wavelength of sodiam metal is 6800the work function is:
The work function of a sulsstance is 4.0ev the longest wavelength of light that can cause photoelectron emission from this sulsstance is opprinately.
The slope of frequency of incident light and stopping potential for a given surface will be.