SÁCH CHUYÊN ĐỀ VẬT LÝ 12 - 3

["CH\u01af\u01a0NG 7: H\u1ea0T NH\u00c2N NGUY\u00caN T\u1eec \u2013 CH\u1ee6 \u0110\u1ec0 3 B\u1ea2NG \u0110\u00c1P \u00c1N 1.C 2.A 3.B 4.D 5.D 6.B 7.C 8.C 9.D 10.D 11.D 12.C 13.B 14.C 15.B 16.A 17.B 18.D 19.C 20.A 21.C 22.C 23.C 24.C 25.B 26.A 27.B 28.C 29.D 30.B 31.A 32.A 33.B 34.B 35.A 36.B 37.D 38.B 39.C 40.B 41.A 42.B 43.A 44.B 45.B 46.D 47.B 48.A 49.A 50.B 51.B 52.A 53.A 54.B 55.D QR CODE PDF L\u1eddi gi\u1ea3i TRANG 99","CH\u01af\u01a0NG 7: H\u1ea0T NH\u00c2N NGUY\u00caN T\u1eec \u2013 CH\u1ee6 \u0110\u1ec0 4 CH\u1ee6 \u0110\u1ec0 4: PH\u1ea2N \u1ee8NG PH\u00c2N H\u1ea0CH \u2013 NHI\u1ec6T H\u1ea0CH CH\u1ee6 \u0110\u1ec0 4: PH\u1ea2N \u1ee8NG PH\u00c2N H\u1ea0CH \u2013 NHI\u1ec6T H\u1ea0CH PH\u01af\u01a0NG PH\u00c1P B\u00c0I TO\u00c1N \u2756 M\u1ed9t nh\u00e0 m\u00e1y h\u1ea1t nh\u00e2n c\u00f3 c\u00f4ng su\u1ea5t ph\u00e1t \u2756 B\u01b0\u1edbc 1: N\u0103ng l\u01b0\u1ee3ng m\u00e0 nh\u00e0 m\u00e1y s\u1ea3n su\u1ea5t ra trong \u0111i\u1ec7n l\u00e0 P, d\u00f9ng n\u0103ng l\u01b0\u1ee3ng ph\u00e2n h\u1ea1ch c\u1ee7a h\u1ea1t nh\u00e2n U235 v\u1edbi hi\u1ec7u su\u1ea5t H1. Trung b\u00ecnh m\u1ed7i h\u1ea1t th\u1eddi gian t: W = P.t U235 ph\u00e2n h\u1ea1ch t\u1ecfa ra m\u1ed9t n\u0103ng l\u01b0\u1ee3ng \uf044E . H\u1ecfi trong kho\u1ea3ng th\u1eddi gian t th\u00ec nh\u00e0 m\u00e1y \u0111\u00f3 ti\u00eau \u2756 B\u01b0\u1edbc 2: N\u0103ng l\u01b0\u1ee3ng c\u1ea7n cung c\u1ea5p cho nh\u00e0 m\u00e1y \u0111\u00f3 th\u1ee5 m\u1ed9t nhi\u00ean li\u1ec7u l\u00e0 bao nhi\u00eau, bi\u1ebft trong nhi\u00ean li\u1ec7u c\u00f3 ch\u1ee9a U235 v\u1edbi h\u00e0m l\u01b0\u1ee3ng H2 ho\u1ea1t \u0111\u1ed9ng trong th\u1eddi gian t: Wo = W = P.t \u2756 M\u1ed9t s\u1ed1 ch\u00fa \u00fd v\u1ec1 \u0111\u01a1n v\u1ecb H1 H1 \u2794 t c\u00f3 \u0111\u01a1n v\u1ecb l\u00e0 gi\u00e2y: 1 n\u0103m= 86400s \u2794 N\u1ebfu \uf044E c\u00f3 \u0111\u01a1n v\u1ecb MeV ph\u1ea3i \u0111\u1ed5i sang Jun \u2756 B\u01b0\u1edbc 3: G\u1ecdi N l\u00e0 s\u1ed1 h\u1ea1t U235 c\u1ea7n d\u00f9ng trong kho\u1ea3ng \u2794 m \u0111\u01a1n v\u1ecb l\u00e0 gam th\u1eddi gian t: N = Wo = P.t \uf044E H1.\uf044E \u2756 B\u01b0\u1edbc 4: Kh\u1ed1i l\u01b0\u1ee3ng U235 nguy\u00ean ch\u1ea5t c\u1ea7n d\u00f9ng trong kho\u1ea3ng th\u1eddi gian t: m = N .A NA \u2756 B\u01b0\u1edbc 5: Kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean li\u1ec7u c\u1ea7n d\u00f9ng trong kho\u1ea3ng th\u1eddi gian t: M = m H2 C\u00e2u 1: (\u0110H \u2013 2021) \u1ede nhi\u1ec7t \u0111\u1ed9 cao, hai h\u1ea1t nh\u00e2n \u0111\u01a1teri ( 2 H ) k\u1ebft h\u1ee3p v\u1edbi nhau th\u00e0nh h\u1ea1t nh\u00e2n heli 1 ( 4 He ). \u0110\u00e2y l\u00e0: 2 A. Ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch. B. Ph\u1ea3n \u1ee9ng nhi\u1ec7t h\u1ea1ch. D. Ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc. B. Qu\u00e1 tr\u00ecnh ph\u00f3ng x\u1ea1. C\u00e2u 2: (Minh H\u1ecda \u2013 2021)Cho ph\u1ea3n \u1ee9ng nhi\u1ec7t h\u1ea1ch: 2 H + 2 H \u2192 1 n +X. H\u1ea1t nh\u00e2n X l\u00e0 1 1 0 A. 3 He . B. 4 He . C. 6 Li . D. 1 H 2 2 2 1 C\u00e2u 3: (Minh h\u1ecda- 2018) Ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n n\u00e0o sau \u0111\u00e2y l\u00e0 ph\u1ea3n \u1ee9ng nhi\u1ec7t h\u1ea1ch A. 1 n + 235 U \u2192 139 Xe + 95 Sr + 2 1 n C. 2 H + 3 H \u2192 4 He + 1 n 0 92 54 38 0 1 1 2 0 C. 1 n + 235 U \u2192 144 Ba + 89 Kr + 3 1 n D. 210 Po \u2192 4 He + 206 Pb 0 92 56 36 0 84 2 82 C\u00e2u 4: (\u0110H-2018) Cho c\u00e1c h\u1ea1t nh\u00e2n: 235 U , 238 U , 4 He v\u00e0 239 Pu . H\u1ea1t nh\u00e2n kh\u00f4ng th\u1ec3 ph\u00e2n h\u1ea1ch l\u00e0: 92 92 2 94 A. U238 B. 239 Pu C. 4 He D. U235 94 2 92 92 C\u00e2u 5: (\u0110H-2018) Ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n n\u00e0o d\u01b0\u1edbi \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 ph\u1ea3n \u1ee9ng nhi\u1ec7t h\u1ea1ch A. 1 H + 3 H \u2192 4 He B. 2 H + 2 H \u2192 4 He 1 1 2 1 1 2 C. 2 H + 3 H \u2192 4 He + 1 n D. 210 Po \u2192 4 He + 206 Pb 1 1 2 0 84 2 82 TRANG 100","CH\u01af\u01a0NG 7: H\u1ea0T NH\u00c2N NGUY\u00caN T\u1eec \u2013 CH\u1ee6 \u0110\u1ec0 4 C\u00e2u 6: (\u0110H-2018) Cho ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n 2 H + 3 H \u2192 4 He + 1 n . \u0110\u00e2y l\u00e0: 1 1 2 0 A. Ph\u1ea3n \u1ee9ng nhi\u1ec7t h\u1ea1ch. B. Ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch. B. Ph\u1ea3n \u1ee9ng thu n\u0103ng l\u01b0\u1ee3ng. D. Qu\u00e1 tr\u00ecnh ph\u00f3ng x\u1ea1. C\u00e2u 7: (Minh H\u1ecda-2019) H\u1ea1t nh\u00e2n U235 h\u1ea5p th\u1ee5 m\u1ed9t h\u1ea1t n\u01a1tron th\u00ec v\u1ee1 ra hai h\u1ea1t nh\u00e2n nh\u1eb9. \u0110\u00e2y l\u00e0: C\u00e2u 8: 92 A. Qu\u00e1 tr\u00ecnh ph\u00f3ng x\u1ea1. B. Ph\u1ea3n \u1ee9ng nhi\u1ec7t h\u1ea1ch. C. Ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch. D. Ph\u1ea3n \u1ee9ng thu n\u0103ng l\u01b0\u1ee3ng. (\u0110H-2017) Cho r\u1eb1ng khi m\u1ed9t h\u1ea1t nh\u00e2n urani U235 ph\u00e2n h\u1ea1ch th\u00ec t\u1ecfa ra n\u0103ng l\u01b0\u1ee3ng trung b\u00ecnh l\u00e0 92 200MeV. L\u1ea5y NA=6,023.1023 mol-1, kh\u1ed1i l\u01b0\u1ee3ng mol c\u1ee7a urani l\u00e0 235g\/mol. N\u0103ng l\u01b0\u1ee3ng t\u1ecfa ra khi ph\u00e2n h\u1ea1ch h\u1ebft 1kg urani U235 l\u00e0: 92 A. 5,12.1026MeV B. 51,2.1026MeV C. 2,56.1015MeV D. 2,56.1016MeV C\u00e2u 9: (\u0110H-2017) Cho r\u0103ng khi m\u1ed9t h\u1ea1t urani U235 ph\u00e2n h\u1ea1ch th\u00ec t\u1ecfa ra 200MeV. L\u1ea5y NA=6,023.1023 92 mol-1, kh\u1ed1i l\u01b0\u1ee3ng mol c\u1ee7a urani l\u00e0 235g\/mol. N\u0103ng l\u01b0\u1ee3ng t\u1ecfa ra khi ph\u00e2n h\u1ea1ch h\u1ebft 2g urani U235 92 l\u00e0: A. 9,6.1010J B. 10,3.1023J C. 16,4.1023J D. 16,4.1010J C\u00e2u 10: (\u0110H-2017) Gi\u1ea3 s\u1eed, m\u1ed9t nh\u00e0 m\u00e1y \u0111i\u1ec7n h\u1ea1t nh\u00e2n d\u00f9ng nhi\u1ec7n li\u1ec7u 235 U . Bi\u1ebft c\u00f4ng su\u1ea5t ph\u00e1t \u0111i\u1ec7n l\u00e0 92 500MW v\u00e0 hi\u1ec7u su\u1ea5t chuy\u1ec3n h\u00f3a n\u0103ng l\u01b0\u1ee3ng h\u1ea1t nh\u00e2n th\u00e0nh \u0111i\u1ec7n n\u0103ng l\u00e0 20%. Cho r\u1eb1ng khi m\u1ed9t h\u1ea1t nh\u00e2n urani U235 ph\u00e2n h\u1ea1ch th\u00ec t\u1ecfa ra n\u0103ng l\u01b0\u1ee3ng 3,2.10-11J. L\u1ea5y NA=6,02.1023 mol-1 v\u00e0 kh\u1ed1i 92 l\u01b0\u1ee3ng mol c\u1ee7a U235 l\u00e0 235g\/mol. N\u1ebfu nh\u00e0 m\u00e1y ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c th\u00ec l\u01b0\u1ee3ng 235 U m\u00e0 nh\u00e0 m\u00e1y 92 c\u1ea7n d\u00f9ng trong 365 ng\u00e0y l\u00e0: A. 962kg B. 1121kg C. 1352,5kg D. 1421kg C\u00e2u 11: H\u1ea1t nh\u00e2n U238 sau chu\u1ed7i ph\u00f3ng x\u1ea1 \uf061,\uf062 cu\u1ed1i c\u00f9ng cho \u0111\u1ed3ng v\u1ecb b\u1ec1n c\u1ee7a ch\u00ec 206 Pb . S\u1ed1 h\u1ea1t \uf061,\uf062 ph\u00e1t 82 92 ra l\u00e0: A. 8 h\u1ea1t \uf061 v\u00e0 10 h\u1ea1t \uf062+ B. 4 h\u1ea1t \uf061 v\u00e0 2 h\u1ea1t \uf062\u2212 C. 8 h\u1ea1t \uf061 v\u00e0 6 h\u1ea1t \uf062\u2212 D. 8 h\u1ea1t \uf061 v\u00e0 8 h\u1ea1t \uf062+ C\u00e2u 12: S\u1ef1 ph\u00e2n h\u1ea1ch c\u1ee7a h\u1ea1t nh\u00e2n urani 235 U khi h\u1ea5p th\u1ee5 m\u1ed9t n\u01a1tron ch\u1eadm x\u1ea3y ra theo nhi\u00eau c\u00e1ch. M\u1ed9t 92 trong c\u00e1c c\u00e1ch \u0111\u00f3 \u0111\u01b0\u1ee3c cho b\u1edfi ph\u01b0\u01a1ng tr\u00ecnh 235 U + 1 n \u2192 140 Xe + 94 Sr + k 1 n . S\u1ed1 n\u01a1tron \u0111\u01b0\u1ee3c 92 0 54 38 0 t\u1ea1o ra trong ph\u1ea3n \u1ee9ng n\u00e0y l\u00e0: A. k=3 B. k=6 C. k=4 D. k=2 C\u00e2u 13: S\u1ef1 ph\u00e2n h\u1ea1ch l\u00e0 s\u1ef1 v\u1ee1 m\u1ed9t h\u1ea1t nh\u00e2n n\u1eb7ng: A. M\u1ed9t c\u00e1ch t\u1ef1 ph\u00e1t th\u00e0nh nhi\u1ec1u h\u1ea1t nh\u00e2n nh\u1eb9 h\u01a1n. B. Th\u00e0nh hai h\u1ea1t nh\u00e2n nh\u1eb9 h\u01a1n do h\u1ea5p th\u1ee5 m\u1ed9t n\u01a1tron. C. Th\u00e0nh hai h\u1ea1t nh\u00e2n nh\u1eb9 h\u01a1n v\u00e0 v\u00e0i n\u01a1tron sau khi h\u1ea5p th\u1ee5 m\u1ed9t n\u01a1tron ch\u1eadm. D. Th\u00e0nh hai h\u1ea1t nh\u00e2n nh\u1eb9 h\u01a1n m\u1ed9t c\u00e1ch t\u1ef1 ph\u00e1t. C\u00e2u 14: Ch\u1ecdn c\u00e2u sai. Ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch d\u00e2y truy\u1ec1n: A. L\u00e0 ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch x\u1ea3y ra li\u00ean ti\u1ebfp cho c\u00e1c h\u1ea1t nh\u00e2n n\u1eb7ng h\u1ea5p th\u1ee5 c\u00e1c n\u01a1tron sinh ra t\u1eeb c\u00e1c ph\u00e2n h\u1ea1ch tr\u01b0\u1edbc \u0111\u00f3. B. X\u1ea3y ra khi s\u1ed1 n\u01a1tron trung b\u00ecnh nh\u00e2n \u0111\u01b0\u1ee3c sau m\u1ed7i ph\u00e2n h\u1ea1ch l\u1edbn h\u01a1n 1. C. Lu\u00f4n ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c. D. X\u1ea3y ra khi s\u1ed1 n\u01a1tron trung b\u00ecnh nh\u1eadn \u0111\u01b0\u1ee3c sau m\u1ed7i ph\u00e2n h\u1ea1ch b\u1eb1ng 1. TRANG 101","CH\u01af\u01a0NG 7: H\u1ea0T NH\u00c2N NGUY\u00caN T\u1eec \u2013 CH\u1ee6 \u0110\u1ec0 4 C\u00e2u 15: Trong s\u1ef1 ph\u00e2n h\u1ea1ch c\u1ee7a h\u1ea1t nh\u00e2n 235 U , g\u1ecdi k l\u00e0 h\u1ec7 s\u1ed1 nh\u00e2n n\u01a1tr\u01a1n. Ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y l\u00e0 92 \u0111\u00fang: A. N\u1ebfu k<1 th\u00ec ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch d\u00e2y chuy\u1ec1n x\u1ea3y ra v\u00e0 n\u0103ng l\u01b0\u1ee3ng t\u1ecfa ra t\u0103ng nhanh. B. N\u1ebfu k>1 th\u00ec ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch d\u00e2y chuy\u1ec1n t\u1ef1 duy tr\u00ec v\u00e0 c\u00f3 th\u1ec3 g\u00e2y n\u00ean b\u00f9ng n\u1ed5. C. N\u1ebfu k>1 th\u00ec ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch d\u00e2y chuy\u1ec1n kh\u00f4ng x\u1ea3y ra. D. N\u1ebfu k=1 th\u00ec ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch d\u00e2y chuy\u1ec1n x\u1ea3y ra. C\u00e2u 16: Ph\u1ea3n \u1ee9ng nhi\u1ec7t h\u1ea1ch l\u00e0 s\u1ef1: A. K\u1ebft h\u1ee3p hai h\u1ea1t nh\u00e2n r\u1ea5t nh\u1eb9 th\u00e0nh m\u1ed9t h\u1ea1t nh\u00e2n n\u1eb7ng h\u01a1n trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 r\u1ea5t cao. B. K\u1ebft h\u1ee3p hai h\u1ea1t nh\u00e2n c\u00f3 s\u1ed1 kh\u1ed1i trung b\u00ecnh th\u00e0nh m\u1ed9t h\u1ea1t nh\u00e2n r\u1ea5t n\u1eb7ng \u1edf nhi\u1ec7t \u0111\u1ed9 r\u1ea5t cao. C. Ph\u00e2n chia m\u1ed9t h\u1ea1t nh\u00e2n nh\u1eb9 th\u00e0nh hai h\u1ea1t nh\u00e2n nh\u1eb9 h\u01a1n k\u00e8m theo s\u1ef1 t\u1ecfa nhi\u1ec7t. D. Ph\u00e2n chia m\u1ed9t h\u1ea1t nh\u00e2n r\u1ea5t n\u1eb7ng th\u00e0nh c\u00e1c h\u1ea1t nh\u00e2n nh\u1eb9 h\u01a1n. C\u00e2u 17: Ph\u1ea3n \u1ee9ng nhi\u1ec7t h\u1ea1ch l\u00e0: A. S\u1ef1 k\u1ebft h\u1ee3p hai h\u1ea1t nh\u00e2n c\u00f3 s\u1ed1 kh\u1ed1i trung b\u00ecnh t\u1ea1o th\u00e0nh h\u1ea1t nh\u00e2n n\u0103ng h\u01a1n. B. Ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n thu n\u0103ng l\u01b0\u1ee3ng. C. Ph\u1ea3n \u1ee9ng trong \u0111\u00f3 m\u1ed9t h\u1ea1t nh\u00e2n n\u1eb7ng v\u1ee1 th\u00e0nh hai m\u1ea3nh nh\u1eb9 h\u01a1n. D. Ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n t\u1ecfa n\u0103ng l\u01b0\u1ee3ng. C\u00e2u 18: Ch\u1ecdn c\u00e2u sai khi n\u00f3i v\u1ec1 ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch, nhi\u1ec7t h\u1ea1ch: A. Ph\u1ea3n \u1ee9ng nhi\u1ec7t h\u1ea1ch l\u00e0 ph\u1ea3n \u1ee9ng k\u1ebft h\u1ee3p hai h\u1ea1t nh\u00e2n nh\u1eb9 th\u00e0nh h\u1ea1t nh\u00e2n n\u1eb7ng h\u01a1n. B. Ph\u1ea3n \u1ee9ng nhi\u1ec7t h\u1ea1ch ch\u1ec9 x\u1ea3y ra \u1edf nhi\u1ec7t \u0111\u1ed9 r\u1ea5t cao (c\u1ee1 h\u00e0ng tr\u0103m tri\u1ec7u \u0111\u1ed9). C. X\u00e9t n\u0103ng l\u01b0\u1ee3ng t\u1ecfa ra tr\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb kh\u1ed1i l\u01b0\u1ee3ng th\u00ec ph\u1ea3n \u1ee9ng nhi\u1ec7t h\u1ea1ch t\u1ecfa ra n\u0103ng l\u01b0\u1ee3ng l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch. D. M\u1ed9t ph\u1ea3n \u1ee9ng nhi\u1ec7t h\u1ea1ch t\u1ecfa n\u0103ng l\u01b0\u1ee3ng nhi\u1ec1u h\u01a1n ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch. C\u00e2u 19: M\u1ed9t l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n ph\u00e2n h\u1ea1ch c\u00f3 c\u00f4ng su\u1ea5t 200MW. Cho r\u1eb1ng to\u00e0n b\u1ed9 n\u0103ng l\u01b0\u1ee3ng m\u00e0 l\u00f2 ph\u1ea3n \u1ee9ng n\u00e0y sinh ra \u0111\u1ec1u do s\u1ef1 ph\u00e2n h\u1ea1ch c\u1ee7a U235 v\u00e0 \u0111\u1ed3ng v\u1ecb n\u00e0y ch\u1ec9 b\u1ecb ti\u00eau hao b\u1edfi qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ea1ch. Coi m\u1ed7i n\u0103m c\u00f3 365 ng\u00e0y, m\u1ed7i ph\u00e2n h\u1ea1ch sinh ra 200MeV; s\u1ed1 Av\u00f4ga\u0111ro NA=6,02.1023. Kh\u1ed1i l\u01b0\u1ee3ng U235 m\u00e0 l\u00f2 ti\u00eau th\u1ee5 trong 3 n\u0103m l\u00e0: A. 461,6 g B. 461,6 kg C. 230,8 kg D. 230,8 g C\u00e2u 20: Trong ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch h\u1ea1t nh\u00e2n U235, n\u0103ng l\u01b0\u1ee3ng trung b\u00ecnh t\u1ecfa ra khi ph\u00e2n h\u1ea1ch m\u1ed9t h\u1ea1t nh\u00e2n l\u00e0 214 MeV. T\u00ednh n\u0103ng l\u01b0\u1ee3ng t\u1ecfa ra trong qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ea1ch 1(g) h\u1ea1t nh\u00e2n U234 trong l\u00f2 ph\u1ea3n \u1ee9ng. Bi\u1ebft s\u1ed1 Av\u00f4ga\u0111ro NA=6,023.1023 A. 8,8.104J B. 8,7.1010J C. 8,8.1010J D. 8,7.104J C\u00e2u 21: Cho ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch: 235 U + 1 n \u2192 95 Mo + 139 La + 2 1 n + 7 0 e . Cho bi\u1ebft kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a c\u00e1c 92 0 42 57 0 \u22121 h\u1ea1t nh\u00e2n l\u00e0: mU=234,99u; mMo=94,88u; mLa=138,87u; mn=1,01u; me \uf0bb 0 v\u00e0 1u= 931 MeV\/c2, s\u1ed1 Av\u00f4ga\u0111ro NA=6,02.1023. N\u0103ng l\u01b0\u1ee3ng t\u1ecfa ra khi 1 gam U235 ph\u00e2n h\u1ea1ch h\u1ebft l\u00e0: A. 8,78.1010J B. 6,678.1010J C. 214.1010J D. 32,1.1010J C\u00e2u 22: M\u1ed9t t\u00e0u ng\u1ea7m c\u00f3 c\u00f4ng su\u1ea5t 500kW, d\u00f9ng n\u0103ng l\u01b0\u1ee3ng ph\u00e2n h\u1ea1ch c\u1ee7a h\u1ea1t nh\u00e2n U235 v\u1edbi hi\u1ec7u su\u1ea5t 20%. Trung b\u00ecnh m\u1ed7i h\u1ea1t nh\u00e2n U235 ph\u00e2n h\u1ea1ch t\u1ecfa ra n\u0103ng l\u01b0\u1ee3ng 200MeV. Trong m\u1ed9t ng\u00e0y ho\u1ea1t \u0111\u1ed9ng c\u1ea7n ti\u00eau th\u1ee5 s\u1ed1 nguy\u00ean t\u1eed U235 nguy\u00ean ch\u1ea5t l\u00e0: A. 675.1018 B. 675.1019 C. 675.1020 D. 675.1021 TRANG 102","CH\u01af\u01a0NG 7: H\u1ea0T NH\u00c2N NGUY\u00caN T\u1eec \u2013 CH\u1ee6 \u0110\u1ec0 4 C\u00e2u 23: M\u1ed9t nh\u00e0 m\u00e1y \u0111i\u00ean h\u1ea1t nh\u00e2n c\u00f3 c\u00f4ng su\u1ea5t ph\u00e1t \u0111i\u1ec7n 192.107 W, d\u00f9ng n\u0103ng l\u01b0\u1ee3ng ph\u00e2n h\u1ea1ch c\u1ee7a h\u1ea1t nh\u00e2n U235 v\u1edbi hi\u1ec7u su\u1ea5t 30%. Trung b\u00ecnh m\u1ed7i h\u1ea1t U235 ph\u00e2n h\u1ea1ch t\u1ecfa ra n\u0103ng l\u01b0\u1ee3ng 200MeV. H\u1ecfi trong 1 n\u0103m ho\u1ea1t \u0111\u1ed9ng nh\u00e0 m\u00e1y ti\u00eau th\u1ee5 m\u1ed9t kh\u1ed1i l\u01b0\u1ee3ng U235 nguy\u00ean ch\u1ea5t l\u00e0 bao nhi\u00eau, bi\u1ebft s\u1ed1 Av\u00f4ga\u0111r\u00f4 NA=6,02.1023 A. 2360 kg B. 2461 kg C. 2482 kg D. 3463 kg C\u00e2u 24: M\u1ed7i ph\u00e2n h\u1ea1ch c\u1ee7a h\u1ea1t nh\u00e2n U235 b\u1eb1ng n\u01a1tron t\u1ecfa ra m\u1ed9t n\u0103ng l\u01b0\u1ee3ng h\u1eefu \u00edch l\u00e0 185MeV. M\u1ed9t l\u00f2 ph\u1ea3n \u1ee9ng c\u00f4ng su\u1ea5t 100MW d\u00f9ng nhi\u00ean li\u1ec7u U235 trong th\u1eddi gian 8,8 ng\u00e0y ph\u1ea3i c\u1ea7n bao nhi\u00eau kg Urani, bi\u1ebft s\u1ed1 Av\u00f4ga\u0111ro NA=6,023.1023 A. 3kg B. 2kg C. 1kg D. 0,5kg C\u00e2u 25: M\u1ed9t t\u00e0u ph\u00e1 b\u0103ng nguy\u00ean t\u1eed c\u00f3 c\u00f4ng su\u1ea5t l\u00f2 ph\u1ea3n \u1ee9ng P=18MW, nhi\u00ean li\u1ec7u l\u00e0 urani \u0111\u00e3 l\u00e0m gi\u00e0u ch\u1ee9a 25% U235. T\u00ecm kh\u1ed1i l\u01b0\u1ee3ng nhi\u00ean li\u1ec7u c\u1ea7n \u0111\u1ec3 t\u00e0u ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c trong 60 ng\u00e0y. Cho bi\u1ebft m\u1ed9t h\u1ea1t U235 ph\u00e2n h\u1ea1ch t\u1ecfa ra 3,2.10-11J. Coi hi\u1ec7u su\u1ea5t s\u1eed d\u1ee5ng l\u00e0 100%. A. 5,16kg B. 4,95kg C. 3,84kg D. 4,55kg C\u00e2u 26: M\u1ed9t nh\u00e0 m\u00e1y \u0111i\u1ec7n h\u1ea1t nh\u00e2n c\u00f3 c\u00f4ng su\u1ea5t 160kW, d\u00f9ng n\u0103ng l\u01b0\u1ee3ng ph\u00e2n h\u1ea1ch U235, hi\u1ec7u su\u1ea5t H=20%. M\u1ed7i h\u1ea1t U235 ph\u00e2n h\u1ea1ch t\u1ecfa ra n\u0103ng l\u01b0\u1ee3ng l\u00e0 200 MeV. V\u1edbi 500g U235 th\u00ec nh\u00e0 m\u00e1y \u0111\u00f3 ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c trong bao l\u00e2u: A. 500 ng\u00e0y B. 590 ng\u00e0y C. 593 ng\u00e0y D. 565 ng\u00e0y B\u1ea2NG \u0110\u00c1P \u00c1N 1.B 2.A 3.C 4.C 5.D 6.A 7.C 8.A 9.D 10.A 11.C 12.D 13.C 14.C 15.B 16.A 17.D 18.D 19.C 20.C 21.A 22.B 23.B 24.C 25.D 26.C QR CODE PDF L\u1eddi gi\u1ea3i TRANG 103",""]