N a n g iMag l i e n k e t r i e n g cua X la: 8, = A, AE N a n g liicfng l i e n k e t r i e n g cua Y l a : EJ - —^• V i A i > A n e n e, < s, N g h i a la h a t n h a n Y ben vufng h o n h a t nhanX Vdy chon dap an D Cau 8: Cho p h a n ufng h a t n h a n : ',T + ^ j H e + X L a y dp h u t k h o i cua h a t n h a n T, h a t n h a n D , h a t n h a n He I a n ItfPt la 0,009106u; 0,002491u; 0,030382u va l u = 931,5 MeV/cl N a n g liTong toa cua phan ufng xap x i bang: A 21,076 MeV B 200,025 M e V C 17,498 M e V D 15,017 M e V Giai T'lr p h a n ufng + ^D ^He + X t a suy r a ^X V i QX la m o t n d t r o n n e n k h o n g c6 n a n g lUdng l i e n k e t Do h u t k h o i cua p h a n ufng: A M = Am^^ - Am^ + Am^ = 0,0303 82u - 0,009106u + 0,002491 u N a n g liitfng toa cua p h a n ufng: A E ^ A M c ' = , 8 l,5.c^ =17,498MeV Vdy chgn dap an C Cau 9: K h i noi ve thuyet Itfcfng tii anh sang, phat bieu nao sau day la diing? A A n h sang dtforc tao bcfi c^c h a t goi la photon B Nang lifong photon cang nho k h i cuf&ng chum anh sang cang nho C Photon CO the chuyen dong hay dufng y e n t u y thuoc vao nguon sang chuyen dong hay dufng yen D N a n g iMng cua p h o t o n cang I d n k h i t a n so cua a n h sang ufng v d i photon cang nho Giai Theo t h u y e t lifgrng tuf a n h sang, a n h sang dugfc tao bofi cac h a t goi la paoton Cac h a t luon chuyen dong va c6 n a n g iMng la s = hf Vdy chgn dap an A Giai Chi tiet ae thi TS DH, CO M6n vat li 31