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m„Rbkxj c`v_©weÁvb : beg-`kg †kÖwY 11 M-†mU 11 ivRkvnx †evW© 2020 welq †KvW : 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. AeZj `c©‡Yi †dvKvm `~i‡Z¡i wØ ̧Y `~i‡Z¡ GKwU e ̄‘ ivL‡j Gi cÖwZwe¤^ n‡e- i. eμZvi †K‡›`a ii. D‡ëv iii. e ̄‘i AvKv‡ii mgvb wb‡Pi †KvbwU mwVK? K i L i I iii M ii I iii N i, ii I iii n DÏxcKwU jÿ Ki Ges 2 I 3bs cÖ‡kœi DËi `vI : a b na = 1.8 nb = 1.5 q 2. a gva ̈‡gi mv‡c‡ÿ b gva ̈‡gi cÖwZmiYv1⁄4 KZ? K 0.3 L 0.83 M 1.2 N 3.95 3. D3 NUbvq- i. Ca < Cb ii. AvcZb †KvY > cÖwZmiY †KvY iii. q = 33.56° n‡j Av‡jvKiwk¥ we‡f`Zj †Nu‡l hv‡e wb‡Pi †KvbwU mwVK? K i L ii M i I ii N i I iii 4. cwieZ©bkxj †PŠ¤^K‡ÿ‡Îi Øviv †Kv‡bv eZ©bx‡Z Zwor cÖevn m„wói NUbv‡K Kx e‡j? K Zwor Av‡ek L Zvwor‡PŠ¤^K Av‡ek M †PŠ¤^K Av‡ek N †PŠ¤^K cÖvej ̈ 5. wb‡Pi †KvbwU mylg Z¡i‡Yi MÖvd? K mgq ® †eM ® L mgq ® miY ® M mgq ® miY ® N mgq ® †eM ® n DÏxcKwU jÿ Ki Ges 6 I 7bs cÖ‡kœi DËi `vI : E = 3 V R1 = 6 W R2 = 3 W R3 = 6 W 6. eZ©bxi Zzj ̈‡iva KZ? K 15 W L 18 5 W M 12 5 W N 6 W 7. D3 eZ©bx‡Z- i. R1 I R3 †Z ZworcÖevn mgvb ii. R2 I R3 Gi ÿgZv mgvb bq iii. R1, R2 I R3 Gi wefe cv_©K ̈ mgvb wb‡Pi †KvbwU mwVK? K i L ii M i I iii N ii I iii 8. kã Zi‡1⁄2i we ̄Ívi wZb ̧Y n‡j k‡ãi ZxeaZv KZ ̧Y n‡e? K 1 9 ̧Y L 1 3 ̧Y M 3 ̧Y N 9 ̧Y 9. †Rbv‡iU‡ii Kvh©bxwZ e ̈envi K‡i †KvbwU ˆZwi Kiv nq? K w ̄úKvi L gvB‡μv‡dvb M †gvUi N †iwWI 10. ZvcgvÎv evov‡j †Kvb c`v‡_©i we`y ̈r cÖevn e„w× cvq? K Zvgv L †jvnv M wRsK N wmwjKb 11. wb‡Pi †Kvb cixÿYwU‡Z WvB e ̈envi Kiv nq? K wmwU ̄‹ ̈vb L GgAviAvB M Avëavm‡bvMÖvwd N GbwRIMÖvwd mwVK DËi : K I N 12. †K m~h©‡Kw›`aK †mŠiRM‡Zi e ̈vL ̈v cÖ`vb K‡ib? K †Kvcvwb©Kvm L †_wjm M Avh©fÆ N iv`vi‡dvW© 13. †KvbwU †f±i ivwk? K KvR L cøeZv M Pvc N `aæwZ 14. 100 m DuPz †_‡K GKwU e ̄‘ wb‡P †d‡j w`‡j GwU KZ †e‡M gvwU‡Z co‡e? K 22.14 m s-1 L 31.30 m s-1 M 44.27 m s-1 N 69.29 m s-1 15. `šÍ wPwKrmKMY †Kvb Av‡jvKxq hš¿ e ̈envi K‡ib? K AeZj `c©Y L DËj `c©Y M DËj †jÝ N AeZj †jÝ 16. `ywU Avav‡bi ga ̈Kvi Zwor ej- i. Avavb `ywUi cÖK...wZi Dci wbf©i K‡i ii. cÖ‡Z ̈KwU Avavb wØ ̧Y Ki‡j Zwor ej AvU ̧Y n‡e iii. Avavb `ywUi ga ̈eZ©x `~iZ¡ A‡a©K Ki‡j Zwor ej Pvi ̧Y n‡e wb‡Pi †KvbwU mwVK? K i L iii M i I ii N i I iii 17. †KvbwU myihy3 k‡ãi ˆewkó ̈ bq? K ZxeaZv L `kv M wU¤^vi (RvwZ) N ZxÿèZv 18. 20 m s-1 †e‡M GKwU 50 g f‡ii †Uwbm ej wb‡ÿc Ki‡j GwU †`Iqv‡j av°v †L‡q Avevi GKB w`‡K wd‡i G‡j ejwUi fi‡e‡Mi cwieZ©b KZ? K 0 kg m s-1 L 1 kg m s-1 M 2 kg m s-1 N 20 kg m s-1 19. ÿgZvi gvÎv †KvbwU? K ML2T -2 L ML2T -3 M MLT-2 N ML-1T -2 20. wb‡Pi †KvbwUi MwZ Nl©Y †ewk n‡e? K UavK L gUi mvB‡Kj M evBmvB‡Kj N cÖvB‡fU Kvi 21. †jvnvi NbZ¡ †KvbwU? K 7.80 gm/cc L 13.69 gm/cc M 19.30 gm/cc N 2.60 gm/cc n DÏxcKwU co Ges 22 I 23bs cÖ‡kœi DËi `vI : 30 °C ZvcgvÎvi 150 g cvwb‡Z 75 °C ZvcgvÎvi †jvnvi `Ð wbgw3⁄4Z Kiv n‡jv Ges P‚ovšÍ ZvcgvÎv 56 °C n‡jv| cvwbi Av‡cwÿK Zvc 4200 J kg-1 K-1 , †jvnvi Av‡cwÿK Zvc I NbZ¡ h_vμ‡g 450 J kg-1 K-1 Ges 7800 kg m-3 | 22. cvwbi M„nxZ Zvc KZ? K 16380 J L 18900 J M 35280 J N 16380000 J 23. D3 NUbvq- i. †jvnvi `‡Ði ewR©Z Zvc = cvwbi M„nxZ Zvc ii. †jvnvi fi = 9 ́ cvwbi fi iii. cvwbi ZvcaviY ÿgZv < †jvnvi `‡Ði ZvcaviY ÿgZv wb‡Pi †KvbwU mwVK? K ii L iii M i I iii N i, ii I iii 24. wb‡Pi †KvbwU w ̄’wZ ̄’vcK ̧Yv‡1⁄4i GKK? K kg m-1 s-2 L kg m2 s-2 M kg m s-2 N kg m2 s-3 25. wb‡Pi †KvbwU PvR©nxb, finxb KYv? K Avjdv L weUv M Mvgv N cwRUab 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 N 2 L 3 N 4 L 5 M 6 N 7 N 8 N 9 L 10 N 11 * 12 K 13 L 14 M 15 K 16 N 17 L 18 M 19 L 20 K 21 K 22 K 23 M 24 K 25 M