Tiêu đề physics 2018.pdf ✅

m„Rbkxj c`v_©weÁvb : beg-`kg †kÖwY 27 27 mKj †evW© 2018 welq ˆKvW : 1 3 6 mgq : 25 wgwbU c`v_©weÁvb eûwbe©vPwb Afxÿv c~Y©gvb : 25 [we. `a. : mieivnK...Z eûwbe©vPwb Afxÿvi DËic‡Î cÖ‡kœi μwgK b¤^‡ii wecix‡Z cÖ`Ë eY©msewjZ e„Ëmg~n n‡Z mwVK/ m‡e©vrK...ó Dˇii e„ËwU ej c‡q›U Kjg Øviv m¤ú~Y© fivU Ki|] 1. fi cwigv‡ci Av`k© ÔwK‡jvMÖvgÕ wba©vi‡Y †h wmwjÛvi e ̈en„Z n‡q‡Q Dnvi e ̈vmva© KZ †m.wg.? K 1 L 1.95 M 3.3 N 3.9 2. Wz‡evRvnv‡R Kx e ̈envi K‡i AviI DbœZ ai‡bi †cwi‡ ̄‹vc e ̈envi Kiv nq? K DËj †jÝ L mgZj `c©Y M Gj.B.wW. N wcÖRg 3. ML2T -3 gvÎvwU n‡jv- i. GKK mg‡q K...Z Kv‡Ri ii. ÿgZvi iii. GKK mg‡q e ̈wqZ kw3i wb‡Pi †KvbwU mwVK? K i I ii L i I iii M ii I iii N i, ii I iii 4. †Kv‡bv gva ̈‡gi cig cÖwZmiYv1⁄4 2 n‡j evqy mv‡c‡ÿ H gva ̈‡gi μvwšÍ‡KvY KZ wWwMÖ? K 60 L 45 M 30 N 24 5. w_a-wcb cøv‡M †KvbwU e ̈en„Z nq? K mvwK©U †eaKvi L myBP M wdDR N Av_© Zvi 6. mwVK m¤úK© n‡jv- i. s = 1 r ii. G = 1 r iii. s = G L A wb‡Pi †KvbwU mwVK? K i I ii L i I iii M ii I iii N i, ii I iii 7. n-p-n UavbwR÷‡i 'p' AskwU Kx? K msMÖvnK L wbtmvi M cxV N weea©K 8. Avjdv iwk¥i †eM KZ m s-1 ? K 3 ́ 105 L 3 ́ 106 M 3 ́ 107 N 3 ́ 108 n wb‡Pi wPÎwU jÿ Ki Ges 9 I 10bs cÖ‡kœi DËi `vI : h2 h1 m A B C 9. B we›`y‡Z e ̄‘wUi wefekw3 KZ? K mgh1 L mgh2 M mg(h1 + h2) N mg(h1 - h2) 10. cošÍ Ae ̄’vq f‚c„ô n‡Z KZ D”PZvq Gi MwZkw3 wefekw3i wZb ̧Y n‡e? K h1 4 L h2 3 M h1 + h2 3 N h1 + h2 4 11. DBÛwgj Gi D‡jøL cvIqv hvq †Kvb gymwjg weÁvbxi MÖ‡š’? K Avj gvmy`x L Be‡b Avj nvB_vg M Avj nv‡Rb N Avãym mvjvg 12. GKwU 1 mm e ̈v‡mi Zv‡i 98 N IRb Szwj‡q †`Iqv n‡j cxob KZ n‡e? K 1.25 ́ 1010 Nm-2 L 1.25 ́ 108 Nm-2 M 1.2 ́ 108 Nm-2 N 1.2 ́ 106 Nm-2 13. A B N O M M¢ 30° wPÎwU‡Z cÖwZdjb †Kv‡Yi gvb KZ? K 30° L 45° M 60° N 90° 14. GKwU Z‡j ivLv 8 kg f‡ii †Kv‡bv e ̄‘i Dci 30 N ej cÖ‡qvM Kivq e ̄‘wU 3 m s-2 Z¡iY jvf K‡i| e ̄‘ I Z‡ji ga ̈Kvi Nl©Y ej KZ wbDUb? K 0 L 6 M 24 N 54 15. m¤úÖwZ ev wKQyw`b c~‡e© msMwVZ nvU© A ̈vUvK kbv3Ki‡Yi Rb ̈ †KvbwU cÖ‡qvRb? K BwmwR L wmwU ̄‹ ̈vb M BwUwU N GbwRIMÖvwd 16. s = ut + 1 2 at2 mgxKi‡Y ut Gi gvÎv †KvbwU? K LT-3 L LT-2 M L N 0 17. Soe„wói mgq †KvbwU A‡cÿvK...Z fv‡jv? K QvZvi wb‡P Ae ̄’vb Kiv L Mv‡Qi wb‡P Ae ̄’vb Kiv M ˆe`y ̈wZK LyuwUi wb‡P Ae ̄’vb Kiv N e„wó‡Z †fRv 18. †KvbwUi w`K e ̈vL ̈vi Rb ̈ Zwor ej‡iLv e ̈en„Z nq? K Zwor‡ÿÎ L Zwor ZxeaZv M Zwor wefe N Zwor Av‡ek 19. †KvbwU AmsiÿYkxj ej? K Nl©Y ej L Zwor ej M gnvKl© ej N †PŠ¤^K ej 20. Ep = 240 V np = 50 ns = 25 R = 10 W UvÝdg©viwUi †jvW (R)-Gi ga ̈ w`‡q KZ A ̈vw¤úqvi we`y ̈r cÖevwnZ n‡e? K 12 L 24 M 48 N 120 n wb‡Pi GKwU Avo Zi‡1⁄2i wP‡Î †`Iqv n‡jv| wP‡Îi Av‡jv‡K 21 I 22bs cÖ‡kœi DËi `vI : A B C D E G I K F J H 21. mg`kv m¤úbœ we›`y ̧‡jv n‡”Q- K A, B, C L A, C, E M B, D, F N A, E, I 22. mwVK m¤úK© n‡jv- i. l = CE ii. 2l = AI iii. 3 2 l = CI wb‡Pi †KvbwU mwVK? K i I ii L i I iii M ii I iii N i, ii I iii 23. †j‡Ýi mKj `~iZ¡ - †_‡K cwigvc Kiv nq| K Av‡jvK †K›`a L eμZvi †K›`a M cÖavb †dvKvm N c„ô 24. g~j † ̄‹j I fvwb©qvi † ̄‹j-Gi mgwš^Z e ̈env‡i wbU cvV cvIqv †Mj 12.66 cm. fvwb©qvi mgcvZb 6 n‡j fvwb©qvi aaæeK KZ (†`qv Av‡Q cÖavb † ̄‹‡ji cvV 12.6 cm)| K 0.1 mm L 0.01 mm M 0.5 mm N 0.05 mm 25. †KvbwU cvi` _v‡g©vwgUv‡ii ZvcgvwÎK ag©? K Pvc L ˆ`N© ̈ M NbZ¡ N †iva Self test 1 KLMN 2 KLMN 3 KLMN 4 KLMN 5 KLMN 6 KLMN 7 KLMN 8 KLMN 9 KLMN 10 KLMN 11 KLMN 12 KLMN 13 KLMN 14 KLMN 15 KLMN 16 KLMN 17 KLMN 18 KLMN 19 KLMN 20 KLMN 21 KLMN 22 KLMN 23 KLMN 24 KLMN 25 KLMN "-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- DËigvjv 1 L 2 N 3 N 4 L 5 M 6 N 7 M 8 M 9 K 10 N 11 K 12 L 13 M 14 L 15 K 16 M 17 N 18 L 19 K 20 K 21 N 22 M 23 K 24 K 25 L