a laser used to weld detached retains emits light with a wavelength 652nm in pulses that are of 20ms duration - Physics - Dual Nature Of Radiation And Matter

Question

a laser used to weld detached retains emits light with a wavelength
652nm in pulses that are of 20ms duration the average power during
each pulse is 0 6W the energy in each pulse and in a single photon
are? (ans : 7 5 x 1016 eV, 1 9 eV) how to proceed with
the sum pls explain

Vara · Accepted Answer

(1)Power=EnergytimeEnergy in each pulse:               E=Pt                  =0
6×20×10-3                  =0
012 J                   =0
0121
6×10-19eV                    =7
5×1016 eV(2)Energy of a single photon:E=hcλ   =6
6×10-343×108652×10-9   =3
04×10-19 J   =3 04×10-191
6×10-19 eV   =1 9 eV

a laser used to weld detached retains emits light with a wavelength 652nm in pulses that are of 20ms duration. the average power during each pulse is 0.6W. the energy in each pulse and in a single photon are? (ans : 7.5 x 1016 eV, 1.9 eV) how to proceed with the sum pls explain.

a laser used to weld detached retains emits light with a wavelength 652nm in pulses that are of 20ms duration. the average power during each pulse is 0.6W. the energy in each pulse and in a single photon are? (ans : 7.5 x 10¹⁶ eV, 1.9 eV) how to proceed with the sum pls explain.