Which Of The Following. Species Will Produe The Shorte Wavelength For Thetransition  n = 2 To N = ?

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.

Potential energy of li^2t electron is

The slope of frequency of incident light and stopping  potential for a given  surface will be.

If  is the radsies of the first orbit of hydrogen atom, then the radii of second, third and forth orbit in terms of  us.

The de- Broglie wavelength associated  with proton changes by 0.25%. if its momentum  is changed by the initial momentum was