Title Periodic motion & Chemical change-2- Daily-11 Home Practice-With Solve.pdf ✅

1 Varsity (Second Timer) Daily-11 [Home Practice (Solve Sheet)] wm‡jevm : ch©ve„Ë MwZ + ivmvqwbK cwieZ©b-2 c~Y©gvb: 60 †b‡MwUf gvK©: 0.25 mgq: 40 wgwbU c`v_©weÁvb (Physics) 1. c„w_ex c„‡ô GKwU mij †`vj‡Ki †`vjbKvj 2 sec| G‡K P›`ac„‡ô wb‡j Gi †`vjbKvj nq 3 sec| c„w_exi fi I P‡›`ai f‡ii AbycvZ 81 n‡j, c„w_exi e ̈vmva© I P‡›`ai e ̈vmv‡a©i AbycvZ KZ? 6 : 1 1 : 4 1 : 2 2 : 1 DËi: 6 : 1 e ̈vL ̈v: Te = 2 L ge ; Tm = 2 L gm Te Tm = gm ge = GMm R 2 m GMe R 2 e  Te Tm = Mm Me  Re Rm  Re Rm = Te Tm  Me Mm = 2 3  81 = 9  2 3 = 6  Re : Rm = 6 : 1 2. 20 g f‡ii GKwU e ̄`‡K w ̄úas Gi GKcÖv‡šÍ mshy3 K‡i GKwU Nl©Ywenxb †Uwe‡ji Dci †i‡L 5 N ej cÖ‡qvM Kivq w ̄úaswU 0.2 m cÖmvwiZ nq| wm‡÷gwUi ch©vqKvj KZ n‡e? 4 2  102 s 4  102 s 2 2  102 s 2  102 s DËi: 4 2  102 s e ̈vL ̈v: F = kx  k = F x = 5 0.2 = 50 2 = 25 Nm1  T = 2 m k = 2 0.02 25 = 2 0.08 100 = 2 8  104 = 2  2 2  102 = 4 2  102 s 3. mij †`vj‡Ki MwZkw3i †jLwPÎ †KvbwU? t Ek t Ek t Ek t Ek DËi: t Ek e ̈vL ̈v: Ek = 1 2 mv2 = 1 2 m 2A 2 cos2 (t + ) Ek = 1 2 kA2 cos2 (t + )  Ek ebvg t Gi †jLwPÎ n‡jv cos2 (t + ) Gi †jLwPÎ-  2 3 2 O  2 1 2 kA2 4. GKwU e ̄`‡K w ̄úas‡qi mv‡_ mshy3 K‡i GKwU wbw`©ó we ̄Ívi w`‡j Zv f1 K¤úv‡1⁄4 `yj‡Z _v‡K| G‡K w ̄’i K‡i wfbœ we ̄Ívi w`‡j wm‡÷gwU f2 K¤úv‡1⁄4 `yj‡Z _v‡K| Zvn‡j f1 > f2 f2 > f1 f1 = f2 AwbY©q‡hvM ̈ DËi: f1 = f2 e ̈vL ̈v:  = k m ; A_©vr K¤úv1⁄4 we ̄Ív‡ii Dci wbf©i K‡i bv|  = 2f 5. GKwU ivevi e ̈vÛ‡K x `~i‡Z¡ Uvbv n‡j, cÖZ ̈qbx ej nq F(x) = px + qx 2 (p I q aaæeK)| Zvn‡j L `~i‡Z¡ Uvb‡j K...ZKvR? pL 2 + qL 2 1 2 (pL 2 + qL 3 ) pL 2 2 + qL 3 3 pL 2 3 + qL 2 2 DËi: pL 2 2 + qL 3 3 e ̈vL ̈v: K...ZKvR, W =  L 0 (px + qx 2 )dx =     px 2 2 L 0 +     qx 3 3 L 0 = pL 2 2 + qL 3 3