Physics Past Paper PDF - 2020, AQA

E-821 Roll No. iji F Higher Secondary Examination (Regular) - 2020 ifrr- dTPTR PH...

E-821 Roll No. iji F Higher Secondary Examination (Regular) - 2020 ifrr- dTPTR PHYSICS (Hindi & English Versions) Total Total Printed Time : Maximum Questions : 18 Pages : 8 3 Hours Marks : 70, 31ftqf4 t1 1;EW9. viicb 5 A" 18 cicb "51P9 3-TtafM?"4" --0:1 it4 *it I vp cb4lict) 1 tr 4 dcb cb 5P9- 'TT 5 3 31 kr 3LI51 - '17 1 3i". ". ftufftff t 31P-9- viicb 5 A 7 ict) c 3P.9. "TT 2 3 ftzTiftd. t. I 31"-- 1-- fk7 'ffTTITTT 30 1,zq t I Viich 8 10 dcb 31P.9. 'TT 3 3 d t I 1;0- 3 1 t f'07 1.s4 41-1 WrITTT 75 i,s4 t I 3P9- viicb 11 A 15 cict) 5M=FT 31" TIT 4 at-- ft d- I cFi 3dt rcit; Zr- WRITE 120 Picq t I VP9" swiict) 16 tr 18 deb "4-4 5P9- ITT 5 3 cTtI 1;k1- "PO- Plcsq 411 fl-TPTIT 150 l'sq t. I 31-Mqcbdi1tilt ions : All questions are compulsory. Internal options are given in each question Nos. 5 to 18. Each question from Question Nos. 1 to 4 carry 5 marks and each sub-question carries 1 mark. Each question from Question Nos. 5 to 7 carry 2 marks and word limit for each answer is approx. 30 words. Each question from Question Nos. 8 to 10 carry 3 marks and word limit for each answer is approx. 75 words. Each question from Question Nos. 11 to 15 carry 4 marks and word limit for each answer is approx. 120 words. Each question from Question Nos. 16 to 18 carry 5 marks and word limit for each answer is approx. 150 words. Draw neat and labelled diagrams wherever necessary. 1 MEN III111 111 11111iiiii11111 1111 ni11111 1 111iiii P.T.O.  4 4ft vici“ fo-N-4 : 5X1=5 (3T) fq—Cpf r 1-11')Ich t (i)T- ' x Tir-e-T2 4[1:1 (ii) c uii x 1:11ZT (iii) W19- / 4 (iv) t—d-T9- TN72 (q) cli.4 1 &APT c4 c4IcK1 Neff Aid : 27c (i) =— (ii) c = va T x = 27c (iii) c= (iv) k (4) t 1:1F&1I t (i) 1.33 (ii) 1.5 (iii) 2.51 (iv) 1.0 (q)tR-Tir3j st)iiict) 4 -ro:r4 t (i) 4 --(Tf-17 ki(sql (ii) 9T1 T -11-ft, P-m 74. i'rz-r9): cf) (iii) 9T i.T:ritqa- 9-1a-r9)t c tit qi (iv) kii-R)c.to 4 Qi n w t)R trr4 N-111 t (i) c4.0 aiRT-(t fl-q7 (iii) 1 411-1 i(S 1 4 i ft-47 (iv) \31- 1- t-kgct) Select and write the correct option from the options given in each question : Unit of electric dipole moment is : (i) coulomb x meter2 (ii) coulomb x meter (iii) coulomb / meter (iv) coulomb / meter2 Equation for wave vector is : 27r (i) (ii) c = u?k, T x 27r (iii) c=— (iv) k= T 210 / E-821 2 IMNIVE11iliVillOili V VIO1 11 1111 1 10 1111 P.T.O.  (c) Value of absolute refractive index of water is : (i) 1.33 (ii) 1.5 (iii) 2.51 (iv) 1.0 (d) Atomic number is represented by : (i) Number of neutrons present inside the nucleus (ii) Number of proton and neutron present inside the nucleus (iii) Number of protons present inside the nucleus (iv) None of the above (e) n-type semiconductor contains : (i) Electrons in majority (ii) Holes in majority (iii) Equal number of holes and electrons (iv) Electrons in minority mc'tf- 7 : 5x1=5 'I. (3-T) ZIRT S.I. 1:EN iiiict) t (4) wft/ici (xi) r S.I. tr-ed- i-frAcb t (r) 3-TT4PT Th-T TIT9- S.I. tied. 11 T- 01-11- / 61di t (') Art ITTITIT1 4 44 4 cf.1-i q.( % I Ric ctmi -crt4r7 tsimicm w 4 47)1-1.-1 t Fill in the blanks : (a) S.I. unit of electric current density is (b) S.I. unit of inductive reactance (XL) is (c) The value of specific charge of electron in S.I. unit is c/kg. (d) The energy of electron present in ground state of Hydrogen atom is eV. (e) No. of electrons present in the outer most orbit of Silicon (Si) atom is 210 / E-821 3 I1111111IIIIIIIIIIIIIIIIIIiliii P.T.o.  fo7 kcp-IT ".q" 4 A \i4VcI 5 3 " aT" Trei \ 1717-IT "T" -Rftli'4" 00 =Imo, 3T1'47- 4-1q (i) 10-6 m w 'cm () (ii) 41roq41 (A) k9) qus TWT (iii) () 12-q tb I PT ittcrW (iv) TEr- rzr cinazzt Th.r Q-Pz (5) 3W51 c4) u (v) Select the appropriate options from column "B" for each statement of column "A" and match the correct pairs : Column "A" Column "B" (a) Value of Electric field inside (i) 10-6 m the conductor (b) Nichrome Helium nucleus (c) Small bar magnet Resistance wire (d) Order of magnitude of wave- Magnetic dipole length of visible light (e) Alpha particle (v) Zero W1-9*i t;ct) alre-4 / Picq ,i7R ttr-7 : L.,5-xi=5 Vr-41zr #q cbul cl +I ci aM cb ct-q TiyOrd T4:1-qPif cb 4 3TIL449" hr 06 "ffar r l &MLA- 311449. 4-Tirdl- WF 141-9- -- 41-11-dT 05 t I To d.qt I if4)(ui 31-11Th. 4 wiAT i'Jitm I taT cb u I3 T T 311 PT qdTT4 I trrptt dr-4-4 Trr9-- answers in one sentence / word for each question : The force acting on charge particle moving inside magnetic field known as ? The magnifying power of objective lens of compound microscope 06 and eye lens is 05. Find the net magnifying power of compound microscope. (c) Write the relation between energy and frequency of radiation. (d) Write the magnitude of charge present on Beta particle. (e) What is the value of energy gap for metals ? 210 / E-821 4 1 1111111111 111 1 11 111111101 1111 1 11 I I 11111 111111111 11 11 P.T.O.  NTKr1i W. vb. N-d-F--4 UqT -ci-zr1Tr 14%17 I 2 hat is the source of Gamma rays and write its use. 31.441 / OR 4M f ct* ? What do you mean by displacement current ? Write its expression. fall ft4-4f ct ? N.) 2 What do you mean by stopping potentiaT:7 317 T4T / OR ftp t)c=i 5 cbl 02 31 +T -kftrq rite any two applications of photoelectric cell. 1:17131.01 crt 39itP-1-ff TIM -(14-4-01 411Zig4 9TIT 1'0%7 I 2.) rite the names of five spectral series prekent in line spectrum of Hydrogen om. er% MT-47 / °R N. 9-rfir-AzT -N-ff4. 81tI WI- it 7417 -PAR I ,J1 o discovered the nuclear model of atom ? Write the name of experiment rformed by him. 0°C trT. 9fd--(14 6 c W. 1100°C 117 -51-fd-44 7 c W. I niutrt 9-rd-erzT T IN 8 S2W. WA7 sistance of a resistance thermometer 4,0°C is 6 52. At 100°C is 7 d at unknown temperature is 8 Q. Fin:CI) out unknown temperature. 314-4T /. Olt 45/ 10 cilcrd (10 volt) 3-1114, 4 atFr 'Mr!. 3 atFr 0 Trru 4 qui-4 1--1-tTR W. I tritcreT -mu 4tr 541(c1 network of 4 ohm, 4 ohm and 3 ohm resistances are connected to a volt battery as shown in figure. Compute the equivalent resistance and ent obtained from battery. E-821 5 11111111 111 11111111111 111111111 111111 1111111111 11111111 P.T.0. 9 r11(14).5rWMT "AidtzT 3 Write the comparison between resistance and specific resistance of a conductor. aitr4T /OR litz7 cbt -114-1A)d -49-r--4 I q Rhqi cl'TT cb14 cb (d ? Draw the labelled diagram of a meter bridge. On what principle it works ? 10 Mg-7 I 61-Trzi'm foiti-7 3 Write the conditions for obtaining total internal reflection. Write its any two applications. ZIP-TM / OR #PA cA OWTF Itt Th7 cg-VTIct).WA7- Derive the expression for combined focal length of two thin lenses kept in contact. 11 f4q-19- foit7I mum # 1cbIcb 147 tIlT1 4)) LIRA State Bio-Savart's law and define unit electric current on the basis of it. z11141 / OR q-zrq