Title 10. P1C10. Phy.-1st-For-FRB-2024_With Solve_Ridoy 22.03.25.pdf ✅

Av`k© M ̈vm I M ̈v‡mi MwZZË¡  Final Revision Batch 3 4| †Kv‡bv GKw`b KzqvKvUvq GKwU Av`a©ZvgvcK h‡š¿ Av`a© I ï®.. evj¦ _v‡g©vwgUv‡ii cvV cvIqv †Mj h_vμ‡g 25C I 28C| GLv‡b Av‡cwÿK Av`a©Zv 70% Gi KvQvKvwQ n‡jB e„wócvZ ïiæ n| 22C, 24C I 28C ZvcgvÎvq m¤ú„3 ev®úPvc h_vμ‡g 19.83  10–3m cvi` Pvc, 22.38  10– 3m cvi` Pvc I 28.35  10–3m cv`i cvc| 28C ZvcgvÎvq †MøBmv‡ii Drcv`K 1.67| (K) kw3 Kv‡K e‡j? [w`. †ev. 24] (L) Òel©vKvj A‡cÿv kxZKvj Avivg`vqKÓÑ Av‡cwÿK Av`a©Zvi Av‡jv‡K e ̈vL ̈v Ki|[w`. †ev. 24; Abyiƒc iv. †ev. 22] (M) H w`b wkwkivsK KZ wQj wbY©q Ki|[w`. †ev. 24; Abyiƒc w`. †ev. 24] (N) D3 w`‡b KzqvKvUvq e„wócv‡Zi m¤¢ve ̈Zv MvwYwZKfv‡e hvPvB Ki| [w`. †ev. 24; Abyiƒc w`. †ev. 24] 5| Gwm Pvjy Kivi c~‡e© GKwU Ave× N‡i †Kv‡bv GKw`b ïé I wm3 evj¦ Av`a©ZvgvcK h‡š¿i cvV 30C I 28C cvIqv †Mj| wKš‘ NiwU‡Z Avivg`vqK Ae ̄’vq ZvcgvÎv 24C I Av‡cwÿK Av`©aZv 60% _vKv cÖ‡qvRb| 30C G †Møwmqv‡ii Drcv`K 1.65 Ges 24C, 26C, 28C Ges 30C ZvcgvÎvq m¤ú„3 Rjxq ev®úPvc h_vμ‡g 22.38 mm Hg, 25.21 mm Hg, 28.35 mm Hg I 31.83 mm Hg| (K) wkwkiv1⁄4 Kv‡K e‡j? [iv. †ev. 24] (L) M ̈v‡mi AYy ̧‡jvi kw3 m¤ú~Y©UvB MwZkw3Ñ e ̈vL ̈v Ki| [iv. †ev. 24] (M) Gwm Pvjy Kivi c~‡e© NiwU‡Z wkwkiv1⁄4 wbY©q Ki| [iv. †ev. 24] mgvavb: †`Iqv Av‡Q, ï®.. ev‡j¦i ZvcgvÎv, 1 = 30C wm3 ev‡j¦i ZvcgvÎv, 2 = 28C 25C ZvcgvÎvq †MøBwmqv‡ii Drcv`K, G = 1.65 Avgiv Rvwb, wkwkiv1⁄4,  = 1 – G(1 – 2) = 30 – 1.65(30 – 28) = 26.7C (Ans.) (N) Gwm Pvjy K‡i NiwU‡Z Rjxq ev®úPv‡ci Kxiƒc cwieZ©b Ki‡j NiwU Avivg`vqK Ae ̄’vq Avm‡e? MvwYwZKfv‡e we‡kølY Ki| [iv. †ev. 24] mgvavb: ÔMÕ n‡Z cvB, wkwkiv1⁄4 26.7C (28 – 26)C = 2C ZvcgvÎv e„wׇZ Pvc e„w× = (28.35 – 25.21) mm (Hg)  0.7C ZvcgvÎv e„wׇZ Pvc e„w× = 28.35 – 25.21 2  0.7 = 1.099 mm (Hg)  wkwkiv‡1⁄4 m¤ú„3 Rjxqev®úPvc, f1 = 25.21 + 1.099 = 26.309 mm (Hg)  Gwm Pvjy Kivi c~‡e© N‡i Rjxqev‡®úi Pvc 26.309 mm (Hg) Gwm Pvjy Kivi ci, R = f2 F  0.6 = f2 24C ZvcgvÎvq m¤ú„3 Rjxqev®ú Pvc  f2 = 0.6  22.38 = 13.428 mm (Hg)  N‡i Rjxqev®ú n«vm Ki‡Z n‡e, f1 – f2 f1  100% = 26.309 – 13.428 26.309  100% = 48.96% myZivs Gwm Pvjy K‡i NiwU‡Z Rjxq ev®ú 48.96% n«vm Ki‡j NiwU Avivg`vqK Ae ̄’vq Avm‡e| 6| wP‡Î wZb †gvj M ̈v‡mi P – V †jLwPÎ †`Lv‡bv n‡q‡Q, †hLv‡b AB As‡k T w ̄’i| 1 atm = 105 Nm–2 | B 4.8 V(m3 O ) P(atm) C 1.2 0.6 0.02 D (K) cig Av`a©Zvi msÁv `vI| [h. †ev. 24] (L) Av‡cwÿK Av`a©Zvi GKK †bB †Kb? e ̈vL ̈v Ki| [h. †ev. 24] (M) B we›`y‡Z M ̈vmwUi AvqZb wbY©q Ki| [h. †ev. 24; Abyiƒc e. †ev. 24] (N) B I C we›`y‡Z M ̈vmwUi †eM wfbœ n‡e wKÑbv? MvwYwZKfv‡e hvPvB Ki| [h. †ev. 24; Abyiƒc wm. †ev. 22] 7| mgy‡`ai 5km Mfx‡i Wz‡e _vKv GKwU g~j ̈evb e ̄‘ D×v‡i GK`j Wzeyix mve‡gwi‡b hvÎv Kij| hvÎvc‡_ mve‡gwib †_‡K GKwU ey`ey` †Q‡o w`‡j mgy`a c„‡ô AvqZb 8 ̧Y nq| cvwbi NbZ¡ 1020kgm–3 , g = 9.8ms–2 | D‡jøL ̈ mve‡gwibwUi ewntc„ô m‡e©v”P 4  107 Pa Pvc mn ̈ Ki‡Z cv‡i| (K) cig Av`a©Zv Kv‡K e‡j? [Kz. †ev. 24] DËi: †Kv‡bv ̄’v‡bi evqyi cÖwZ GKK AvqZ‡b Dcw ̄’Z Rjxq ev®ú‡K H ̄’v‡bi cig Av`a©Zv e‡j| (L) †Kv‡bv ̄’v‡bi wkwkivsK evqyi ZvcgvÎvi mgvb n‡Z cv‡i wK? e ̈vL ̈v Ki| [Kz. †ev. 24; Abyiƒc g. †ev. 24]
4  HSC Physics 1st Paper Chapter-10 (M) KZ Mfxi n‡Z ey`ey`wU †Q‡o †`Iqv n‡qwQj wbY©q Ki| [Kz. †ev. 24; Abyiƒc g. †ev. 24] (N) DÏxc‡Ki Wzeyix `j g~j ̈evb e ̄‘i H ̄’v‡b †cŠuQv‡Z cvi‡e wKbv-MvwYwZKfv‡e we‡kølY Ki| [Kz. †ev. 24; Abyiƒc g. †ev. 24] 8| A I B `yBwU wmwjÛv‡i h_vμ‡g 5 g f‡ii N2 I O2 M ̈vm Av‡Q| Dfq wmwjÛv‡i AvqZb 8L| A wmwjÛv‡i M ̈v‡mi Pvc 4  1015 Pa Ges B wmwjÛv‡i M ̈v‡mi Pvc 5  105 Pa| [R = 8.31 Jmol–1 K –1 ] (K) Av`k© Pvc Kv‡K e‡j? [wm. †ev. 24] (L) w`‡bi Zzjbvq iv‡Z †ewk wkwki R‡g †Kb? e ̈vL ̈v Ki| [wm. †ev. 24] (M) B wmwjÛv‡ii ZvcgvÎv KZ? [wm. †ev. 24] mgvavb: Avgiv Rvwb, PV = nRT  TB = PV nR = 5  105  8  10–3  32 5  8.314 = 3079.14 K (Ans.) †`Iqv Av‡Q, Pvc, P = 5  105 Pa AvqZb, V = 8 L = 8  10–3 m 3 †gvj, n = W M = 5 32 mol (N) Dfq wmwjÛv‡i M ̈v‡mi MwZkw3 GKB n‡e wK-bvÑ MvwYwZKfv‡e we‡kølY Ki| [wm. †ev. 24] mgvavb: A wmwjÛv‡ii †ÿ‡Î MwZkw3, EA = f 2 PAVA = 5 2  4  105  8  10–3 [N2 Gi ̄^vaxbZvi gvÎv, f = 5] = 8000 J B wmwjÛv‡ii †ÿ‡Î MwZkw3, EB = f 2 PBVB = 5 2  5  105  8  10–3 [O2 Gi ̄^vaxbZvi gvÎv, f = 5] = 10000 J  EA < EB A_©vr, Dfq wmwjÛv‡i M ̈v‡mi MwZkw3 GKB n‡e bv| (Ans.) 9| GKwU cvÎ weï× cvwb Øviv c~Y© Kiv n‡jv| cv‡Îi MfxiZv 20 cm| 0.08 m2 AvqZ‡bi GKwU evqy ey`ey` cv‡Îi Zj‡`k †_‡K Dc‡i D‡V Gj| cieZ©x‡Z cvwbi cwie‡Z© cvÎwU Ab ̈ GKwU Zij Øviv c~Y© Kiv n‡j ey`ey` Zj‡`k †_‡K Dc‡i Avm‡j Gi e ̈vmva© 2 ̧Y n‡q hvq| [f‚-c„‡ô evqygЇji Pvc 10 Nm–2 Ges cvwbi NbZ¡ 1000 kgm3 ] (K) Av`k© M ̈vm Kv‡K e‡j? [e. †ev. 24] (L) †Kv‡bv ̄’v‡bi Av‡cwÿK Av`a©Zv 85% ej‡Z Kx †evS? e ̈vL ̈v Ki| [e. †ev. 24; Abyiƒc hv. †ev. 23] (M) weï× cvwbi †ÿ‡Î cv‡Îi Dcwic„‡ô e„`ey‡`i AvqZb KZ n‡e? wbY©q Ki| [e. †ev. 24; Abyiƒc cÖkœ g. †ev. 24] (N) DÏxc‡K e ̈eüZ ZijwU cvwbi †P‡q fvix bvwK nvjKv Zv MvwYwZKfv‡e we‡køl‡Yi gva ̈‡g gZvgZ `vI| [e. †ev. 24; Abyiƒc cÖkœ g. †ev. 24] 10| wP‡Î A I B `ywU NbKvK...wZ M ̈vmcvÎ hv‡`i cÖwZwU evûi •`N© ̈ 20 cm Ges Dfq cv‡Î M ̈v‡mi Pvc 24  105 Nm–2 | 20 cm w = 16 gm O2 cvÎ-A 20 cm w = 16 gm H2 cvÎ-B (K) Av‡cwÿK Av`a©Zv Kv‡K e‡j? [e. †ev. 24] (L) Av‡cwÿK Av`a©Zv 100% n‡j wkwkiv1⁄4 †Kgb n‡e? [e. †ev. 24] (M) ZvcgvÎv w ̄’i †i‡L cv‡Îi evûi •`N© ̈ A‡a©K Kiv n‡j cwiewZ©Z Pvc wbY©q Ki| [e. †ev. 24] mgvavb: ZvcgvÎv w ̄’i ivL‡j, PAVA = P AV A  PA a 3 1 = P A a 3 2  P A = PA  a 3 1 a 3 1 = 24  105  (0.2) 3 (0.1) 3 †`Iqv Av‡Q, cv‡Îi evûi Avw` •`N© ̈, a1 = 0.2 m cv‡Îi evûi cwiewZ©Z •`N© ̈, a2 = a1 2 = 0.1 m = 1.92  107 Nm–2 (Ans.)