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www.thinkiit.in Page 1 thinkIIT SPEED OF LIGHT OBJECTIVE-1 1. x Sl ls Hkjh gqbZ ,d c an uyh ls izdk'k xqtjrk gSA ;fn /khjs&/khjs xSl iEi }kjk ckgj fudky yh tkrh gS] uyh ds vUnj izdk'k dh pky& [a] c<+sxhA [b] de gks tk;sxhA [c] fu;r jg sxhA [d] igys c< +sxh fQj de gks tk;sxhA 2. yky i zdk'k ,oa ihy s izdk'k dh pky ,dne cjkcj gksrh gS& [a] fuokZr esa fdUrq ok; q e sa ugha [b] ok;q esa fdUrq fuokZr esa ugha [c] fuokZr o ok;q nksuksa esa [d] u rks fuokZr esa vkSj u gh ok;q esa 3. ,d izdkf'kr oLrq ,d vfHklkjh yS al dh eq[; v{k ij j[kh gqb Z gS] rkfd mldk izfrfcEc yS al ds n wljh vksj cu sA ;fn oLr q dks FkksM+k lk foLFkkfir fd;k tk;s& [a] izfrfcEc Hkh oLr q d s lkFk gh foLFkkfir gksxkA [b] izfrfcEc] oLr q ds dqN le; i'pkr ~ foLFkkfir gksxkA [c] izfrfcEc] oLrq ls dqN le; igys foLFkkfir gksxkA [d] izfrfcEc foLFkkfir ugha gksxkA
www.thinkiit.in Page 2 thinkIIT OBJECTIVE-2 1. izdk'k dh pky 299, 792458 eh@ls gS& [a] izdk'k ds lkis{k [b] lw;Z ds lkis{k [c] i Foh ij xfr'khy ,d Vasu ds lkis{k [d] cká varfj{k es a xfr'khy ,d varfj{k ;ku ds lkis{k 2. iz;ksx'kkyk es a i zdk'k dh pky ekiu s ds fy;s fuEu es a ls dkSulh fof/k;k¡ i z; qDr dh tk ldrh gS& [a] jksej fof/k [b] fQtw fof/k [c] QksdkYV fof/k [d] ekbdylu fof/k 3. ikuh es a izdk'k dh pky ekiu s ds fy;s fuEu esa l s dkSulh fof/k;k¡ iz;qDr dh tk ldrh gS& [a] jksej fof/k [b] fQtw fof/k [c] QksdkYV fof/k [d] ekbdylu fof/k
www.thinkiit.in Page 3 thinkIIT EXERCISES 1. fQtw dh fof/k ls i zdk'k dh pky ekiu s ds ,d iz;ksx es a] fuEufyf[kr vkadM +ksa dk mi;ksx fd;k x;k% niZ.kksa ds e/; dh nwjh = 12.0 fdeh ifg;s esa nkarksa dh la[;k = 180 ifg;s dh og dks.kh; pky Kkr dhft;s] ftlds fy;s izfrfcEc fn[kkbZ ugha nsxkA 2. QksdkYV midj.k ds lkFk fd;s x;s ,d iz;ksx esa fuEu nwfj;k¡ iz;qDr dh x;h % ?kweu s okys rFkk fLFkj niZ.k ds e/; n wjh = 16 eh- ySal rFkk ?kweus okys niZ.k ds e/; nwjh = 6 eh- L=kksr rFkk y Sal d s chp dh n wjh = 2 eh- tc niZ.k 356 ?kw.kZu izfr lsd.M dh pky ls ?kqek;k tkrk gS] izfrfcEc 0.7 feeh foLFkkfir gksrk gSA bu vkadM +ksa dh lgk;rk ls i zdk'k dh pky dh x.kuk dhft;sA 3. izdk'k dh pky ekius ds ekbdylu iz;ksx esa ?kw.kZu dj jgs niZ.k ls nks ijkorZuksa ds e/; izdk'k }kjk r; dh x;h nwjh 4.8 fdeh g SA ?kw.kZu dj jgk niZ.k fu;fer v"VHkqt vkÑfr dk gSA niZ.k dh fdl U;wure dks.kh; pky ds fy;s 1⁄4'kwU; d s vykok1⁄2 cuk;k x;k izfrfcEc ml fLFkfr ij cu sxk tgk¡ v&?kwf.kZr niZ.k cukrk gSA
www.thinkiit.in Page 4 thinkIIT ANSWERS OBJECTIVE-1 1. (a) 2. (a) 3. (b) OBJECTIVE-2 1. (a), (b), (c), (d) 2. (c) 3. (c) EXERCISE 1. 1.25 × 104 deg/s 2. 2.984 × 108 m/s 3. 7.8 × 103 rev/s

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