22 For a tungsten target the K line wavele a more than K

Last updated: 5/28/2023

22 For a tungsten target the K line wavele a more than K approximately percentage 1 15 6 3 12 9 line wavelength by 2 18 5 4 11 9 23 A y ray source shows a count rate of 320 per second when placed before a geiger counter If the half life of the source nuclei is 30 minutes then after 2 hours the count rate per second will be 1 25 3 20 2 30 4 35