Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Dhairya sharma
dear see solution .I used the concept of line spectra of hydrogen atom.
in the transition from first excited state to ground state the spectral line known as k alpha line.
if u fell uneasy the solution plz ask further