Physics 12th Sample Paper 2024 PDF

dsoy vH;kl gsrq uewuk iz’u i= Sample Question Paper for Practice only gk;j lsd.Mjh ijh{kk &2024 Higher Secondary Examination – 2024...

dsoy vH;kl gsrq uewuk iz’u i= Sample Question Paper for Practice only gk;j lsd.Mjh ijh{kk &2024 Higher Secondary Examination – 2024 fo"k; & HkkSfrd 'kkL= Subject – Physics (Hindi & English Versions) Total Question Total Printed Time Maximum Marks Pages 20 8 3 hours 70 funsZ’k %& ¼1½ lHkh iz’u gy djuk vfuok;Z gSA iz’u Øekad 06 ls 20 rd izR;sd iz’u esa vkarfjd fodYi fn;s x;s gSA ¼2½ iz’u Øekad 01] 02] ,oa 04 izR;sd iz’u ij 6 vad fu/kkZfjr gSA izR;sd miiz’u ij 1 vad fu/kkZfjr gSaA ¼3½ iz’u Øekad 03 ,oa 05 izR;sd iz’u ij 05 vad fu/kkZfjr gSA izR;sd miiz’u ij 1 vad fu/kkZfjr gSaA ¼4½ iz’u Øekad 06 ls 12 rd izR;sd iz’u ds 2 vad fu/kkZfjr gSA izR;sd mRrj ds fy, 'kCn lhek yxHkx 30 'kCn gSaA ¼5½ iz’u Øekad 13 ls 16 rd izR;sd iz’u ds 3 vad fu/kkZfjr gSA izR;sd mRrj ds fy, 'kCn lhek yxHkx 75 'kCn gSaA ¼6½ iz’u Øekad 17 ls 20 rd izR;sd iz’u ds 4 vad fu/kkZfjr gSA izR;sd mRrj ds fy, 'kCn lhek yxHkx 150 'kCn gSaA Instructions:- (1) All questions are compulsory. Internal choice is given in every question from question no. 06 to 20. (2) Question no. 01, 02 and 04 carries 6 marks for each. Each sub question carries 1 mark. (3) Question no. 03 and 05 carries 5 marks for each. Each sub question carries 1 mark. (4) Question no. 06 to 12 carries 2 marks for each. For every answer word limit is 30. (approx.) (5) Question no. 13 to 16 carries 3 marks for each. For every answer word limit is 75. (approx.) (6) Question no. 17 to 20 carries 4 marks for each. For every answer word limit is 150. (approx. ) iz01 izR;sd iz’u ds fy, fn, x, fodYiksa esa ls lgh fodYi pqudj fyf[k,A [16 = 6 vad] Select and write the correct option from the options given in each question. ¼v½ ,d dwyke vkos’k esa bysDVªªkWuksa dh la[;k gksrh gSA 1. 5.481029 2. 6.251018 3. 1.81019 4. 9.01011 (A) Number of electrons in one coulomb charge are : 1. 5.481029 2. 6.251018 3. 1.81019 4. 9.01011 ¼c½ fdlh pkyd esa /kkjk dk izokg gksrk gS & 1. v.kqvksa dk 2. eqDr bysDVªªkWuksa dk 3. /kuk;uksa dk 4. /kukos’kksa dk 1 (B) In any conductor, flow of current is - 1. Molecules 2. Free electrons 3. Positive ions 4. Positive charge ¼l½ ,d xfreku vkos’k mRiUu djrk gS & 1. dsoy fLFkj fo|qr {ks= 2. dsoy pqEcdh; {ks= 3. fLFkj fo|qr {ks= vkSj pqEcdh; {ks= nksuksa 4. buesa ls dksbZ ugha (C) A moving charge produces - 1. Only the static electric field. 2. Only the magnetic field 3. Static electric field and magnetic field both 4. None of these. ¼n½ ysat dk fu;e vk/kkfjr gS & 1. vkos’k laj{k.k fu;e ij 2. laosx laj{k.k fu;e ij 3. nzO;eku laj{k.k fu;e ij 4. mtkZ laj{k.k fu;e ij (D) Lenz’s law is based on 1. Law of conservation of charge 2. Law of conservation of momentum 3. Law of conservation of mass 4. Law of conservation of energy ¼b½ fuokZr~ esa fo|qr pqEcdh; rjax dh pky gksrh gS & 1. c= 2. c= 𝜇 𝜀 3. c= 4. c= (E) Speed of electromagnetic waves in vacuum. 1. c= 2. c= 𝜇 𝜀 3. c= 4. c= 2 ¼Q½ T;kferh; Nk;k esa izdk’k ds vfrØe.k dks dgrs gSa & 1. O;frdj.k 2. foorZu 3. /kzqo.k 4. viorZu (f) The overlapping of light in geometrical shadow is called 1. Interference 2. Diffraction 3. Polarization 4. Refraction iz02 fjDr LFkkuksa dh iwfrZ dhft, & [16 = 6 vad] ¼v½ nks lekarj /kkjokgh pkyd rkjksa essa ,d gh fn’kk esa /kkjk izokfgr gks jgh gS rks os ,d&nwljs dks ------------------------------ djsaxsA ¼c½ VªªkalQkWeZj ------------------------------ ds fl)kar ij dk;Z djrk gSA ¼l½ OK ¼’kwU; dsfYou½ ij v)Zpkyd] ----------------------------- dh Hkkafr O;ogkj djrk gSA ¼n½ QksVkWu dk fojke nzO;eku] ------------------------------ gksrk gSA ¼b½ fn"V /kkjk ds fy, izsj.k izfr?kkr ------------------------------ gksrk gSA ¼Q½ izdk’k ds ------------------------------ ds fy, vojks/k ds vkdkj dsk izdk’k ds rjaxnS/;Z dh dksfV dk gksuk pkfg,A Q.No.2 Fill in the blanks – (a) When current flows through the two parallel current carrying wires in same direction, then they will ……………… each other. (b) Transformer works on the principle of ……………… (c) At OK (Zero Kelvin), a semiconductor behaves like ……………… (d) The rest mass of photon is ……………… (e) For direct current the inductive reactance is ……………… (f) The Size of obstacle must be the order of wave length of light for ……………… iz03 lR; ;k vlR; fyf[k, & [15 = 5 vad] ¼v½ gkbMªªkstu ijek.kq dh vk;uu ÅtkZ 13.6 eV gksrh gSA ¼c½ tc bysDVªªku] viuh mPp ÅtkZ voLFkk ls fuEu ÅtkZ voLFkk esa fxjrk gS rks bl izfØ;k esa og ,d QksVkWu mRlftZr djrk gSA ¼l½ gkbMªªkstu ce dh fØ;k fof/k ukfHkdh; fo[kaMu ij vk/kkfjr gSA ¼n½ izdkf’kd rarq] O;frdj.k ds fl)kar ij dk;Z djrk gSA ¼b½ lkekU; lek;kstu dh fLFkfr esa [kxksyh; nwjn’khZ dh uyh dh yEckbZ f0 – fe gksrh gSA 3 Q.No.3 State true or false. (a) Ionisation energy of hydrogen atom is 13.6 eV. (b) When an electron falls from higher energy state to lower energy state, then in this process a photon is emitted. (c) Working of a hydrogen bomb is based on nuclear fission. (d) Optical fibre works on the principle of Interference. (e) At the condition of normal adjustment, the length of tube of astronomical telescope is f 0 – fe. iz04 lgh tksfM+;k¡¡ cukb, & [16 = 6 vad] ^v* ^c* 1- jsfM;ks rjaxs v- fjVj 2- ijkcSxuh rjaxs c- Mh czksXyh 3- n`’; izdk’k l- ts-ts- Fkkelu 4- nzO; rjaxs n- U;wVu 5- izdk’k fo|qr izHkko dk lehdj.k b- ekjdksuh 6- bysDVªªku dh [kkst Q- vkbULVhu Hk- QSjkMs Q.No.4 Make the correct pair – ‘A’ ‘B’ (1) Radio waves (a) Ritter (2) Ultraviolet rays (b) de Broglie (3) Visible light (c) J.J. Thomson (4) Matter waves (d) Newton (5) Equation of Photoelectric effect (e) Marconi (6) Discovery of electron (f) Einstein (g) Faraday iz05 ,d 'kCn ;k ,d okD; esa mRrj nhft, [15 = 5 vad] ¼v½ i`Foh dk fo|qr foHko fdruk gksrk gSA ¼c½ vuqxeu osx dk eku S.I. i)fr esa fdl dksfV dk gksrk gSA ¼l½ dk;ZQyu vksj nsgyh vko`fÙk esa laca/k fyf[k,A ¼n½ fdlh lsy dk fc0ok0 cy mldh VfeZuy oksYVrk ls D;ksa vf/kd gksrk gSA ¼b½ /kkjkekih esa pqEcd ds /kzqo vory ,oa csyukdkj D;ksa cukrs gSaA 4 Q.No.5 Write the answer in one word or one sentence. (a) What is the electric potential of earth ? (b) What is the order of the value of drift velocity in S.I. system. (c) Write the relation between work function and threshold frequency. (d) why the emf of a cell is greater than its terminal voltage. (e) Why the poles of magnet in a galvanometer are cylindrical and concave ? iz06 ysast dk fu;e fyf[k,A 2 State (write) Lenz’s Law. vFkok@OR la/kkfj=h; ¼/kkfjrh;½ izfr?kkr dks ifjHkkf"kr dhft,A bldk S.I. ek=d fyf[k,A Define capacitive reactance. Write its S.I. unit. iz07 fdlh ifjiFk esa 0.1 lsd.M esa /kkjk 5.0 A ls 0.0 A ¼,fEi;j½ rd fxjrh gSA ;fn vkSlr izzsfjr fo|qr okgd cy 200 V gS rks ifjiFk esa LoizsjdRo dk vkdyu dhft,A 2 Current in a circuit falls from 5.0 A to 0.0 A (ampere) in 0.1 s (second). If an average emf of 200 V included. give an estimate of the self inductance of the circuit. vFkok@OR ,d 60 μF dk la/kkfj= 110V, 60 Hz AC vkiwfrZ ls tksM+k x;k gSA ifjiFk esa /kkjk ds rms eku dks Kkr dhft,A A 60 μF capacitor is connected to a 110 V, 60 Hz AC supply. Determine the rms value of currenct in the circuit. iz08 okguksa esa ihNs dk n`’; ns[kus ds fy, fdl niZ.k dk mi;ksx fd;k tkrk gS] vkSj D;ksa \ 2 Which mirror are used as rear view in vehicles and why? vFkok@OR vory niZ.k ds uhps dk vk/kk Hkkx dkyk dj fn;k tkrk gSA izfrfcao ij D;k izHkko iMs+xk\ Half of the bottom part of concave mirror is balck ended. What will be the effect on the image? 5 iz09 fdlh inkFkZ dk viorZukad √2 gSA blds fy, Økafrd dks.k dk eku D;k gksxk\ 2 The refractive index of a material is √2. What will be the value of critical angle for it? vFkok@OR ,d [kxksyh; nwjn’khZ dh vko/kZu {kerk 15 rFkk nksuksa ysalksa ds chp dh nwjh 80 lseh gSA ;fn vfHkn`’;d vkSj usf=dk nksuksa mÙky ySal gks rks mudh Qksdl nwfj;ksa dh x.kuk dhft,A The magnifying power of a astornomical telescope is 15 and distance between two lenses is 80 cm. If both objective and eye piece are convex lens then calculate their focal length. iz010 fuEu ls fdl izdkj dk rjaxzkx fuxZr gksrk gSA 2 ¼1½ fcUnq óksr ¼2½ nwjLFk izdk’k óksr What type of wave front will emerge from (1) a point source (2) distance light source vFkok@OR in ^^dyk lac) óksr** dks ifjHkkf"kr dhft,A Define the term “Coherent Source.” iz011 ;fn ijek.kq esa bysDVªªkWu fLFkj gS rks D;k gksxk\ 2 What will happen if electron in an atom be stationary. vFkok@OR ^^cM+s dks.k ds  d.k ds izdh.kZu ds fy,] dsoy ijek.kq dk ukfHkd gh ftEesnkj gksrk gSA** dFku dh O;k[;k dhft,A “For large angle scattering of  particles, only the nucleus of atom is responsible.” Explain the statement. iz012 nzO;eku {kfr D;k gS\ ifjHkkf"kr dhft,A 2 What is mass defect? Define it. vFkok@OR jsfM;ks ,sfDVork dks ifjHkkf"kr dhft,A Define radioactivity. 6 iz013 fdlh fo|qr lsy ds vkarfjd izfrjks/k dks ifjHkkf"kr dhft,A bldk eku fdu&fdu dkjdksa ij rFkk fdl izdkj fuHkZj djrk gS\ ¼dksbZ nks½ 3 Define internal resistance of a cell. On what factors it depend and how. (any two) vFkok@OR fdlh inkFkZ dh ^izfrjks/kdrk* dks ifjHkkf"kr dhft,A rki ds lkFk (i) vPNk pkyd (ii) v)Zpkyd dh izfrjks/kdrk fdl izdkj ifjofrZr gksrh gS\ Define resistivity of a substance. How the resisitivity of (i) Good conductor (ii) Semi conductor, vary with temperature?. iz014 ck;ks&lsoVZ dk fu;e fyf[k, rFkk bl fu;e dks lfn’k :i esa O;Dr dhft,A 3 State Bio-Savart law and write it in vector form. vFkok@OR ,sfEi;j dk ifjiFkh; fu;e fyf[k, ,oa fl) dhft,A State and prove Ampere’s circuital law. iz015 N–izdkj ,oa P–izdkj ds v)Zpkydksa esa varj fyf[k,A ¼dksbZ rhu½ 3 Write the difference between N–type and P–type semiconductors. (any three) vFkok@OR uSt ¼fut½ v)Zpkyd vkSj vinzO;h v/kZpkyd esa varj fyf[k,A ¼dksbZ rhu½ Write difference between Intrinsic semiconductor and Extrinsic Semiconductor. (any three) iz016 P–N laf/k Mk;ksM dk iw.kZ rjax fn"Vdkjh ds :i esa mi;ksx gsrq ifjiFk vkjs[k [khafp, ,oa ,oa dk;Zfof/k le>kb,A 3 Explain the working of a P–N Junction diode as a full wave rectifier with circuit diagram. vFkok@OR P–N laf/k Mk;ksM dh dk;Zfof/k vxz vfHkufr ,oa i’p vfHkufr esa fo|qr vkjs[k [khapdj le>kb,A Explain the working of P–N Junction diode in forward bias and reverse bias with circuit diagram. 7 iz017 fo|qr {ks= ds fy;s xkWl dh izes; fyf[k, ,oa fl) dhft,A 4 State and prove Gauss Theorem for electric field. vFkok@OR lekarj IysV la/kkfj= dh /kkfjrk gsrq O;atd O;qRiUu dhft,A bldh /kkfjrk dks dkSu&dkSu ls dkjd izHkkfor djrs gSa\ Deduce a formula for the capacitance of a parallel plate capacitor. What are the factors affecting the capacitance of capacitor. iz018 fo|qr usVodZ laca/kh fdjpkWQ ds nksuksa fu;e fyf[k, ,oa fo|qr ifjiFk cukrs gq, O;k[;k dhft,A 4 Write Kirchhoff’s both laws of electric network and explain with draw circuit diagram. vFkok@OR OghVLVksu lsrq D;k gS\ OghVLVksu lsrq dk fl)kar LFkkfir dhft,A What is wheatstone’s bridge? Establish principle of wheatstone’s bridge. iz019 izR;korhZ /kkjk Mk;useks dk o.kZu fuEufyf[kr 'kh"kZdksa ds vUrxZr dhft,& 4 ¼1½ fl)kar ¼2½ ukekafdr js[kkfp= ¼3½ dk;Zfof/k Explain alternating current Dynamo under the basis of following heads : (1) Principle (2) Labelled diagram (3) Working vFkok@OR nks ,d nwljs ij fyiVh levk{kh; yach ifjukfydk ds fy, vU;ksU; izsjdRo dk O;atd LFkkfir dhft,A Derive an expression for mutual inductance of two long coaxial soleniods of same length wound over each other. iz020 la;qDr lw{en’khZ dk o.kZu fuEukafdr 'kh"kZdksa ds vUrxZr dhft, & 4 1- izfrfcEc cuus dh O;oLFkk dk fdj.k vkjs[k 2- vko/kZu {kerk ds lw= dh LFkkiuk tcfd vafre izfrfcac Li"V n`f"V dh U;wure nwjh ij cusA Describe compound microscope on following heads - 1. Ray diagram of formation of image. 2. Derivation of formula for magnifying power when final image is formed at least distance of distinct vision. vFkok@OR fdlh fizTe ds fy, fl) dhft, & μ= For any prism prove that μ= &&&& 8