soltn4 - Homework 4 Solutions 3-g 3-7 of UseE= 4 o, ,1= .E...

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3-g Use E = 4 o, ,1 = .E 1r,rh"r. hc = I 240 eV nm) and th€ results of Problem 3-7 to find 1 E' (a) i=600 nm (b) ,1 = 0.03 m (c) i=10 m TIZ As in Problems $9 and I10, 1=3=3=oo *lrf illi I =r.0x10re photons/s. , hf hc t.9xlo--fm 118 (a) Ks||i = .% = s(0.45 v) = 0.45 eV ' hc l2tlo eVnm -0.* ev = 2.0J eV (b) 9= f _x = -soo nm h. l H "V* =612 rr_ (c, ^,=7= zw"V u. k.b2b xto-t I sY3 x 108 m/s) a?3 5===' - . " -- '=2.48eV ,i (s x 10-' m[r.6x l0-'' J/ev) I E (2.4s ev{1.6 x ro-t' J/ev) ' = i= ; = --ffi =1'3zx to-' 4 ml s TZS E = 3(X) keV, d=30" (a) tt=t'-tn= h (1-coe 4= (0.002 43 nrnll - cos(30")l = 3.25 x10-13 m ' fr.c = 3.25 x10{ nm - ,tc " ;r. (l.ux tor5 evsN3 x loE m7s) (b) E--;-10=;=----- 3d10, "v =414x10-r2 m;thus, X' = lo + AX= 474x10-12 m+0.325x10-12 m=4.455x10-r2 m,and -, hc -, (l't4xloi5 eVs[lx106 "/t) -- E = ; - E = :-:::-:-:::+:::-:::!= 2.78 x 1o5 eV.
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This note was uploaded on 04/12/2009 for the course PHYSICS 7C taught by Professor Lin during the Fall '08 term at Berkeley.

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soltn4 - Homework 4 Solutions 3-g 3-7 of UseE= 4 o, ,1= .E...

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