Krr DHSP TP. HCM KHoA vAr rY lop cOrvnAN ur on rru Hec xi r NAU Hec 2ooe -2olo A^''A MON: VAT LY THONG KE Cffu I: 6 aidml Nhiet dung riOng cria vdt rin theo thuytit Debye: a. Co sd lli thuyOt. b. 56 trqng thAi (s6 s6ng) c6 dn s6 trong khodng (v, c. Nhiet dung. Ciu II: (3 di€m) Bric xa cdn bing - Khi photon: C6c dfnh luQt bric x4 cin bdng. Cffu III: (2diem) Tu phdn bi5 Maxwell c6 di6n eOi vOi mQt h4t ktrOi luqng m,6 nhiQt dQ T, cta tlQ l6n xung luqng). Cffu IV: (2 diem) p5i vOi kh{ electron trong thii tich V 6 tr4ng th6i hodn todn suy biiln (<tq kh6ng tuyet d6i), hdy x6c dinh: s0 trang th6i dO(e) c6 ning luong trong khoing (a, e + de), ndng lugng todn phAn E. Bi6t xung Iuong vd nlng lugng cira m6t electron thoa hQ th['c: s = cp (trud'ng hgp si€u tuong d5i tinh, c: v4n t5c 6nh sdng). T=: ,+ar).& :ri :: l) M F (trung binh {cog - oto4o ?frrt Ld +t"y 0a QuU . Krr DHSP TP. HCM KHoA vAr rY lop cOrvnAN ur on rru Hec xi r NAU Hec 2ooe -2 olo A^''A MON: VAT LY THONG KE Cffu I: 6 aidml Nhiet. - Khi photon: C6c dfnh luQt bric x4 cin bdng. Cffu III: (2diem) Tu phdn bi5 Maxwell c6 di6n eOi vOi mQt h4t ktrOi luqng m,6 nhiQt dQ T, cta tlQ l6n xung luqng). Cffu IV: (2. m,6 nhiQt dQ T, cta tlQ l6n xung luqng). Cffu IV: (2 diem) p5i vOi kh{ electron trong thii tich V 6 tr4ng th6i hodn todn suy biiln (<tq kh6ng tuyet d6i), hdy x6c dinh: s0 trang