Potential Of Physics PDF Chapter 8

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Summary

This document contains questions and answers related to electromagnetic waves and covers the concepts of electric field, magnetic field, and their properties. It discusses the history of electromagnetic waves, including experiments by scientists like Hertz and Marconi. The document also tackles the structure of the atmosphere, specifically the different layers and composition.

Full Transcript

//1// POTENTIAL OF PHYSICS Near of Agrasen Park, Jiwaji Ganj, Morena (M.P.) Mob. 8305084500 M.M. - 04 = 2 + 1 + 1 Unit - 5 Chapter -...

//1// POTENTIAL OF PHYSICS Near of Agrasen Park, Jiwaji Ganj, Morena (M.P.) Mob. 8305084500 M.M. - 04 = 2 + 1 + 1 Unit - 5 Chapter - 8 ¼fo|qr pqEcdh; rjaxs½ (Electro magnetic waves) iz-1 fo|qr pqEcdh; rjaxs fdls dgrs gS \ budh izd`fr rFkk fo'ks"krk;sa fyf[k;sA m- fo|qr pqEcdh; rjaxs %& os rjaxs tks fo|qr {ks=] rFkk pqEcdh; {ks= ds nksyuksa ls mRiUu gksrh gSA mUgsa fo|qr pqEcdh; rjaxs dgrs gSA rFkk ;s nksyu rjax lapj.k dh fn'kk ds yacor~ daiu djrs gSA rFkk fo|qr pqEcdh; rjaxksa dh izd`fr vuqizLFk gksrh gSA rFkk budh pky dk lw= C = 1/ 00 gksrk gSA ] fo'ks"krk;sa %& 1- ;s rjaxs fo|qr {ks= rFkk pqEcdh; {ks= ds nksyuksa ls mRiUu gksrh gSA 2- ;s rjaxsa vuqizLFk gksrh gSA 3- bu rjaxksa dk osx izdk'k ds osx ds cjkcj gksrk gSA vFkkZr~ (3x108 m./sec.) 4- ;s rjaxs fuokZr~ esa xeu djrh gSA 5- ;s rjaxs /kzqo.k xq.k n'kkZrh gSA 6- bu rjaxksa esa ÅtkZ dk laosx gksrk gSA 7- ;s rjaxs ÅtkZ dk LFkkukarj.k djrh gSA iz-2 fo|qr pqEcdh; rjaxksa dk laf{kIr bfrgkl le>kb;sA m- gVZt~ dk iz;kssx %& lu~ 1888 eas teZu ds oSKkfud gV~tZ us fo|qr pqEcdh; rjaxska o izk;kSfxd izn'kZu fd;k vkSj mUgksus iz;ksx'kkyk esa S1 o S2 nks ihry dh ifRr;ka yhA rFkk bu ifRr;ksa dk laca/k /kkrq dh NM+ R1 o R2 ls bl izdkj dj fn;k fd buds chp //2// esa ok;qxSi cuk jgsA rFkk bu nksuksa NM+ksa dk laca/k izsj.k dq.Myh ls dj nsrs gSA blesa ,d lalwpd D yxk jgrk gSA tks o`rh; rkj dk cuk jgrk gSA izsj.k dq.MYkh dh lgk;rk ls 10000 oksYV dk foHkokarj yxkdj nskuksa IysVksa dks foijhr vkos'k ls vkosf'kr fd;k tkrk gSA ftlls vkos'k dk foltZu gksus yxrk gSA vkSj oSKkfud gV~Zt us lalwpd ls ns[kk rks os fo|qrh; pqEcdh; rjaxksa dks 5m. dh nwjh rd ys x;sA cksLk dk iz;ksx %& lu~ 1895 esa Hkkjr dksydkrk ds oSKkfud lj txnh'k pUnz cksl us ,d bysDfVªd jsfM,Vj rS;kj fd;k A ftldh lgk;rk ls izkjaHk esa os rjaxksa dks 25 mm. ls 5 mm. dh nwjh rd ys x;sA rFkk ckn esa caxky ds xouZj ds lkeus fo|qr ?k.Vh dks ctk fn;kA vkSj rjaxksa dks 1.5 km dh nwjh rd ys tkus esa lQyrk izkIr dhA ekdkZsuh dk iz;ksx %& lu~ 1899 eas bVyh ds oSKkfud ekdksZuh us gV~Zt ds iz;ksx dks nksgjk;k rFkk mUgksaus ok;qxSi ds ,d fljs dks ,.Vhuk rFkk nwljs fljs dks izFoh ls tksM+ fn;k vkSj oSKkfud us ekdkZsuh us lalwpd ls ns[kk rks os rjaxksa dks 50 km. dh nwjh rd ys x;sA ckn esa mUgksaus dgk fd vc rjaxksa dks fdruh Hkh nwjh rd ys tk;k tk ldrk gSA vFkkZr~ nwj lapkj ds u, ;qx dk 'kqHkkjaHk gqvkA iz-3 ok;qe.My fdls dgrs gS \ rki rFkk ?kUkRo ds vk/kkj ij ok;qe.My dh fofHkUu ijrksa dk o.kZu dhft;sA m- izFoh ds pkjks vksj ok;q ds ?ksjs dks ok;qe.My dgrs gSA ;g ok;qe.My izFoh lrg ls 300 fdeh- mapkbZ rd izFoh ds pkjksa vksj QSyk gqvk gSA izFoh ds ok;qe.My eas ?kuRo ds vk/kkj ij 78% Nitrogen, 21% Oxygen, 0.9% Organ, 0.03% Co2, 0.002% vfØ; xSlsa rFkk dqN ek=k esa ty ok"i vkSj /kwy ds d.k ik;s tkrs gSA izFoh ds ok;qe.My dks fofHkUu ijrksa esa n'kkZ;k x;k gSA 1- {kksHke.My %& ;g ijr izFoh dh lrg ls 12 fdeh- mapkbZ ij ikbZ tkrh gSA bl ijr es uhps ls mij pyus ij rkieku ?kVrk tkrk gSA rFkk bl ijr dk mij dk ek/; rki &560C gksrk gSA ;g ijr lw;Z ds vkus okys ijkcSaxuh fofdj.kksa dks vo'kksf"kr dj ysrh gSA blfy;s bl ijr dk ?kuRo izFoh ds ?kuRo dk 1@10oka Hkkx gksrk gSA //3// 2- lerki e.My %& bl ijr dk rkieku leku gksus ds dkjk bls lerki e.My ds uke ls tkuk tkrk gSA ;g ijr izFoh dh lrg ls 12 fdeh- ls 30 fdeh- rd QSyh jgrh gSA 3- vkstksu e.My %& ;g ijr izFoh dh lrg ls 30 fdeh- ls 50 fdeh- ds chp esa QSyh jgrh gSA uhps ls mij pyus ij bl ijr dk rkieku &560C ls c

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