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Diffstat (limited to '1271/CH14/EX14.20/example14_20.sce')
| -rwxr-xr-x | 1271/CH14/EX14.20/example14_20.sce | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/1271/CH14/EX14.20/example14_20.sce b/1271/CH14/EX14.20/example14_20.sce new file mode 100755 index 000000000..040ad535e --- /dev/null +++ b/1271/CH14/EX14.20/example14_20.sce @@ -0,0 +1,15 @@ +clc +// Given that +k = 4 // maximum kinetic energy of electron in eV +w = 2.2 // work function of sodium in eV +h = 6.62e-34 // Planck constant in J-sec +c = 3e8 // speed of light in m/sec +e = 1.6e-19 // charge on an electron in C +// Sample Problem 20 on page no. 14.27 +printf("\n # PROBLEM 20 # \n") +printf("Standard formula used \n ") +printf(" E = (h * c) * (1 / lambda1 - 1 / lambda2) \n E = (h * c)/ lambda \n") +lambda_ = ((h * c) / (w * e)) +lambda = (1 / ((((k * e) / (h * c))) + (1 / lambda_))) +printf("\n Threshold wavelength is %d Angstrom.\n Incident electromagnetic wavelength is %f Angstrom",lambda_ * 1e10,lambda * 1e10) + |