If we have a tungsten anode (work function f=4.63 eV) and electron acceleration voltage of 35 kV, what is the minimum wavelength of the x rays? ( )
举一反三
- The momentum of photons corresponding to the minimum wavelength emitted from x-ray tube whose operating voltage is 120 kV is ( )
- A photon of wavelength 2.0 nm Compton-scatters from an electron at an angle of 90°. What is the modified wavelength? ( )
- What is the essence of cathode rays? A: proton B: neutron C: electron D: atom
- The TV is out of ______ so we'll have to do some reading. A: running B: order C: work D: function
- What statements aboutAgree a contract and salary are ture? A: When someone accepts a job offer they have a contract with you as their employer. B: Check what the National Minimum Wage is for different ages C: Check what the National Minimum Wage is for different types of work D: Check what to exclude in a contract