Atoms Test - 24...

The radius of a shell for $$H-atom$$ is $$4.761\,\overset{o}{A}$$. The value of n is:

Which of the following samples will have the same number of atoms as 40 g calcium?

The band spectra (characteristic of molecular species) is due to emission of radiation

Emission spectrum of $$CO_{2}$$ gas

Number of spectral lines in hydrogen atom is

Two photons of same frequencies moving in same medium have:
a) same linear momenta and wavelengths
b) same linear momenta and same speeds
c) same energies and same linear momenta

Which of the following relates to photons both as wave motion and as a stream of particles?

Match the following :

A cathode ray tube has a potential difference of $$V$$ between the cathode and anode. The speed of the cathode rays is given by

In X-ray spectrum, transition of an electron from an outer shell to an inner shell gives a characteristics X-ray spectral line. If we consider the spectral lines $$K_{\beta },L_{\beta },M_{\alpha }$$ then